Sinbo SM-X 2775 Stopped Working After One Use – Refund Request

I purchased a Sinbo Sm-x 27 75 device from the Do Simo store on 20.01.2026. While it was running, we suddenly heard a noise from inside, and after using it only once the device stopped working completely and has not worked again since. Since May I have been waiting for a response from Sinbo customer service about this problem, but despite my attempts to reach them and the ongoing warranty process visible in our WhatsApp correspondence, I have still not received a clear solution or return. Because the device became unusable after only one use and I have been kept waiting for months without an effective response, I request that the faulty product be taken back and my payment be fully refunded as soon as possible.