The store consistently delivers fast delivery and timely shipping, with multiple notes of on-time or same-day pick-up and efficient communication before and after orders. Customers praise the sales and support experience, highlighting helpful phone contact, good communication, and professional, friendly service that makes the buying process smooth. Product quality and reliability are repeatedly affirmed, with easy installation, accurate descriptions, sturdy materials, and dependable performance across several orders. The site navigation is clear and the packaging solid, contributing to overall satisfaction and repeat purchases.
Hello,
We are following up on your feedback and are sorry that your delivery was incomplete.
In the meantime, we have taken the necessary steps to ensure that the missing item is shipped to you as soon as possible.
Thank you for your understanding and we remain at your disposal for any further information.
Best regards
Dominique / SLID'UP Customer Service
M
Maurice R.
Rating: 1 out of 5
following a purchase from 01/08/2026
Still no refund following order cancellation (11 days). Not very professional.
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Response from SLID’UP by Mantion
Hello Sir,
We apologize for this delay in refund and understand your dissatisfaction. During this summer period, our team is operating with a reduced staff, which has exceptionally extended some processing times.
However, we confirm that your refund has been validated today via PayPal. It will soon be visible on your account.
Thank you for your understanding.
Sincerely,
Dominique / The SLID'UP Customer Service
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Michel D.
Rating: 1 out of 5
following a purchase from 09/07/2026
Given the price and the advertising you do regarding the quality of your products, you could have included self-tapping wood screws for fixing the doors and rails. I therefore threw away your cheap screws for Parx self-tapping screws.
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Response from SLID’UP by Mantion
Hello Sir,
We understand your comment regarding the screws provided with your order.
However, the screws included in our kits are intended for use on wooden doors, in accordance with the assembly recommendations of our products. Unfortunately, we cannot provide screws suitable for all materials that may be used for making doors or supports.
Depending on the material and the configuration of the installation, it may therefore be necessary to use specific screws suitable for the relevant support.
Best regards,
The SLID'UP Customer Service
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Radosław K.
Rating: 1 out of 5
following a purchase from 08/07/2026
I received not what I wanted. They didn't even solve the problem (I didn't receive a refund proposal nor was the correct product sent to me)
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Leslie M.
Rating: 1 out of 5
following a purchase from 06/06/2026
The product arrived well packaged in a box but inside the visible bar is scratched. Too bad..:
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Response from SLID’UP by Mantion
Hello Madam,
We are sorry to hear that the product arrived scratched.
If you wish, we can proceed with its replacement. To do this, we invite you to send us a complaint to the address [email protected] attaching photos of the concerned part.
We remain at your disposal for any further information.
Best regards,
Dominique / The SLID'UP Customer Service
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Alejandro A.
Rating: 1 out of 5
following a purchase from 30/05/2026
I received the product damage, the delivery service was changed.
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Fritz B.
Rating: 1 out of 5
following a purchase from 31/05/2026
Mantion reduced the prices of the ordered items by 20% 3(!) days after receiving my order. I find this, to put it mildly, unfair! I would like a statement regarding this pricing policy!
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Richard S.
Rating: 1 out of 5
following a purchase from 01/06/2026
Not impressed with this company at all I will never use them again
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Joseph S.
Rating: 1 out of 5
following a purchase from 30/05/2026
Very good
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Dominic S.
Rating: 1 out of 5
following a purchase from 23/05/2026
No invoice with order. Only after 7 emails!!! Invoice received!! Outrageous
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Response from SLID’UP by Mantion
Dear Dominic,
we are sorry to hear that you are dissatisfied with our service and had difficulties with your invoice. We understand your disappointment!
To avoid such (in this case: vacation-related) delays in email processing, we always send the invoice as an attachment upon receipt of payment, and the shipping notification also contains the invoice again.
Unfortunately, these emails occasionally end up in the spam folder and can therefore be easily overlooked. Sorry for that.
We hope that you are still satisfied with our products - perhaps we may welcome you again in our shop.
Best regards,
The SLID'UP by Mantion team
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Rodney M.
Rating: 1 out of 5
following a purchase from 08/05/2026
Ordered products May 8, 2026 and still don’t have order. It now June 3, 2026. Very disappointed
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C. D.
Rating: 1 out of 5
following a purchase from 12/05/2026
The product was correct, but the delivery was catastrophic. GLS is really an incompetent company. They went around in circles for five days without delivering, and finally dropped the package at a depot in the neighboring city.
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Response from SLID’UP by Mantion
Hello Sir,
Thank you for your feedback.
We are pleased to learn that the product meets your expectations.
However, we are sorry that the delivery caused inconveniences.
We understand your disappointment and take your comments into consideration to improve the quality of our deliveries.
We thank you for your understanding.
Sincerely
Dominique / SLID'UP Customer Service
M
Mikołaj P.
Rating: 1 out of 5
following a purchase from 23/04/2026
-
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Martin L.
Rating: 1 out of 5
following a purchase from 01/05/2026
I did not accept the package because it arrived bent.
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Response from SLID’UP by Mantion
Hello Sir,
Thank you for your feedback.
We are sorry that your package arrived damaged. We understand your decision to refuse it and apologize for this inconvenience.
In the meantime, a new item has been shipped as a replacement.
Best regards
Dominique / Customer Service SLID'UP
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Gaetan A.
Rating: 1 out of 5
following a purchase from 27/04/2026
Package is opened, lost screw nut washer. Email sent to your services still without response
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Response from SLID’UP by Mantion
Hello,
We are sorry that your order was delivered incomplete due to an incident that occurred during transport.
We also apologize for the delay in processing your complaint.
We remain at your disposal for any further information.
Best regards
Dominique / Customer Service SLID'UP
C
Christopher D.
Rating: 1 out of 5
following a purchase from 28/03/2026
I have not received my order.
J
Jacques B.
Rating: 1 out of 5
following a purchase from 04/03/2026
Handles not packed, not protected so received with bumps and aesthetic defects
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Response from SLID’UP by Mantion
Hello Sir,
We regret that the products received are not in good condition.
Of course, we can proceed with the replacement if you wish. In this case, please send us a message in response to the confirmation email of your order.
We remain at your disposal for any questions or clarifications.
Best regards
Dominique / SLID'UP Customer Service
J
Jpaul V.
Rating: 1 out of 5
following a purchase from 10/02/2026
Fast delivery and very well packaged parts.
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Laurent M.
Rating: 1 out of 5
following a purchase from 27/01/2026
The lock kit received was not in good condition, a plastic piece was broken. I don't know if I will be able to install the handle as it is.
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Response from SLID’UP by Mantion
Hello Sir,
We are sorry to learn that the product arrived damaged.
We have a Quality Service: if the product turns out to be non-compliant, it is entirely possible to proceed with its replacement.
We remain at your disposal for any further information.
Best regards,
Dominique / The SLID'UP Customer Service
C
Camille G.
Rating: 1 out of 5
following a purchase from 12/01/2026
poor quality
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Alain C.
Rating: 1 out of 5
following a purchase from 16/11/2025
THE PACKAGE WAS OPENED AND SOME PARTS WERE MISSING
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Response from SLID’UP by Mantion
Hello Sir,
We are sorry to learn that your package arrived open and that parts are missing.
We invite you to send us a claim by email so that we can take the necessary steps and send you the missing parts.
Best regards
The SLID'UP Customer Service
A
Ah D.
Rating: 1 out of 5
following a purchase from 06/10/2025
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Jean-Louis R.
Rating: 1 out of 5
following a purchase from 08/10/2025
Package 00K6NGGH announced delivered but not received from GLS
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Danny B.
Rating: 1 out of 5
following a purchase from 08/08/2025
Tried to engage customer support with help on a faulty product. Was not seeking any monetary compensation or replacement. Was told that they could not address my issue or provide any support because their failed roller on my sliding door was purchased thru a third party. Doesn’t surprise me that a company with poorly designed / faulty products also has very poor customer service. Would most definitely seek other options for your accessory needs. Be wary of the weight ratings and plastic components used in their products. We had to failures on two different doors (all within their specs) in less than a year. A significant pain and expense. We replaced with another manufacturer’s product and have been very satisfied with the design and use. No plastic parts to fail..,
Response from SLID’UP by Mantion
Hello, We're truly sorry to hear about your experience with our product and customer support. We appreciate your feedback, as it helps us identify areas for improvement. If you have any other suggestions or would like to discuss this further, please feel free to reach out to us directly. Thank you for sharing your concerns. Slid'up team
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L D.
Rating: 1 out of 5
following a purchase from 19/08/2025
Defective item.
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Response from SLID’UP by Mantion
Hello, We are sorry to hear that you encountered a problem with your item. Please feel free to contact us directly so that we can proceed with the replacement of this defective item. Additionally, please send us details about the problem encountered, possibly a photo, to [email protected] so that we can make a non-conformity report to our factory. Best regards. Dominique / SLID'UP Customer Service
T
Tatiana S.
Rating: 1 out of 5
following a purchase from 16/07/2025
package not received, returned to sender without reasons. the delivery was rescheduled, then absence of delivery and return to sender, without the carrier contacting me. no feedback from slid up for now, to return the ordered product or refund me.
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Response from SLID’UP by Mantion
Hello Madam, Thank you for your message. We fully understand your disappointment regarding this situation, and we kindly ask you to accept our apologies for this inconvenience that is beyond your control, as well as ours. Indeed, the carrier has confirmed to us that the package was damaged during transport and deemed undeliverable, which resulted in its return without prior notification – neither to you nor to our service. We regret this lack of information and will take the necessary steps to prevent this from happening again. Best regards, Dominique / SLID'UP Customer Service
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Malak O.
Rating: 1 out of 5
following a purchase from 07/07/2025
I'm not very happy with the delivery, too much delay, I trusted this service a lot but in the end they upset me, they made me lose the day for placing the part I bought from you. In the end, I didn't do it, I set it aside, I lost my workday and I wasn't paid.
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Patrick R.
Rating: 1 out of 5
following a purchase from 03/07/2025
Still nothing received. The GLS delivery person says they put my package in Looker since 08/07, but I never received an email or SMS with an identifier and password… so impossible to retrieve it. Impossible to reach GLS on the weekend and tomorrow is a holiday on 14/07. So I'm lost and I've been living in darkness for over 12 days because my roller shutter is broken in the closed position.
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Krzysztof D.
Rating: 1 out of 5
I have shopped several times, the company reacts very quickly when I leave money, but when I wrote about the desire to return one profile, it was silent as if sowing poppy seeds. Well, it is evident that customer satisfaction is not a priority.
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Nathalie J.
Rating: 1 out of 5
following a purchase from 20/06/2025
Order placed on 20/06, delivery 2 to 3 days but still nothing received after 8 days.
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Response from SLID’UP by Mantion
Hello, We are really sorry to learn that your order, placed on 20/06, and shipped on 23/06 took longer than expected to arrive. After checking the postal tracking site, it is indicated that the package was delivered to your mailbox on Saturday, June 28. If this is not the case, please send us a complaint by email at: [email protected] Best regards, Dominique - The slidup.fr team
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Luis G.
Rating: 1 out of 5
following a purchase from 15/06/2025
disgraceful delivery service.
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Kevin D.
Rating: 1 out of 5
following a purchase from 13/06/2025
Package received empty at a pickup point... I therefore refused the package... I am waiting for a refund from you.
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Geoff I.
Rating: 1 out of 5
following a purchase from 12/06/2025
Too difficult to give a score. The merchandise seems fine but the system of references to order is very confusing. Do confusing that I apparently ordered the wrong rail. Though it seemed obvious to me that if you order 3 rails they would all be the same size. . I was told it was my fault and returns were not accepted. This treatment, in the modern world of internet ordering is not only unacceptable but also probably illegal in the consumer code.
So, shape up, Slid'up, be amenable, be nice.
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Response from SLID’UP by Mantion
Dear Sir, Thank you for taking the time to share your feedback. We’re sorry to hear that the product dimensions did not meet your expectations. The additional rail you purchased is unfortunately not compatible with the selected kit. We understand how this may have caused confusion, even though the information provided on our website is fairly detailed. Of course, a return of the wrong product is possible. Best regards Slid'Up Customer Service A return of the item for a refund is possible.
O
Orbie B.
Rating: 1 out of 5
following a purchase from 10/05/2025
I’ve tried calling the number that’s posted left messages nothing. I would like to start a return, but there is no way to return it that I can see or on their website. I was looking for a little bit of technical support. That’s all but at this point, I’d like to return it.
Response from SLID’UP by Mantion
Hello, Thank you for bringing your concerns to our attention. We're truly sorry to hear about your experience and understand how frustrating it can be to seek assistance without a response. We value your feedback on the return process and are committed to improving support for our customers. While we cannot address specific return requests here, we encourage you to visit our website for detailed instructions or contact us directly via email or phone. Your satisfaction is important to us. Best regards, SLID'UP Team
C
Chris K.
Rating: 1 out of 5
following a purchase from 09/05/2025
I haven't received it yet
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Dominique P.
Rating: 1 out of 5
following a purchase from 01/05/2025
Poorly cared packaging, consequently, the upper rail was bent on the front part.
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Response from SLID’UP by Mantion
Hello, Thank you for taking the time to leave a review. We are sorry to learn that the packaging did not meet your expectations and that it caused damage to your product. Please contact us by email (+ photo) so that we can proceed with the replacement of the rail. Best regards, Dominique / The slidup.fr team
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Oskar R.
Rating: 1 out of 5
following a purchase from 31/03/2024
Unfortunately does not respond to emails regarding a warranty case, therefore unfortunately paid the full purchase price twice.
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Response from SLID’UP by Mantion
Hello and thank you very much for your feedback. We are sorry to hear that you had problems with the response to your emails regarding your warranty case. Your concern is important to us, and we want to ensure that such experiences are not the norm. Therefore, we have internally reviewed your feedback to improve our service - but in fact, we found no message from you, and no call took place either. However, since we offer up to five years warranty on our products, an exchange would have been possible. Alternatively, we could have also found and resolved the reason for the issue together. Please contact us at mailto:[email protected] or Tel.02056-918388, so we can resolve this issue promptly. Thank you! We appreciate your patience in this matter and are always eager to find solutions. Best regards, your slidup.de team.
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Gerhard M.
Rating: 1 out of 5
following a purchase from 23/03/2024
mantion is negatively remembered by me
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Response from SLID’UP by Mantion
Hello, thank you for your feedback. We are sorry to hear that your experience with Mantion was not positive. Your impressions are important to us, and we always strive to improve our services. Without knowing exactly where this memory comes from, we appreciate your feedback and hope that we can create a better experience for you in the future. Best regards, your slidup.de team
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Arnaud J.
Rating: 1 out of 5
following a purchase from 25/03/2025
Mistaken in the order, difficulty in returning and getting something else
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Response from SLID’UP by Mantion
Hello, We are sorry to learn that your order did not meet your expectations. For a withdrawal request, you need to send us a request by email so that we can provide you with our instructions. Best regards, Dominique / The slidup.fr team
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Elliot L.
Rating: 1 out of 5
following a purchase from 02/01/2025
Did not respond to my request for additional product support.
Response from SLID’UP by Mantion
We are sorry for the experience you had with us and the inconvenience it may have caused you. This is not part of our work habits as we answer to all emails, calls and we do call back all missed calls and voicemails. We'll make sure this situation won't happen again. We hope to have you as a customer in the future despite this situation. Thank you for your feedback! SLID'UP Team.
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