Recurring Issues With Arçelik Robotic Vacuum & Service Delays

I am writing to file a formal complaint regarding my Arçelik brand robotic vacuum cleaner. I have been experiencing significant issues with this product, and the customer service process has been deeply frustrating and unacceptable. The new robotic vacuum cleaner, which was provided as a replacement for a previous faulty unit (which had mapping issues), is even worse than the original. It is failing to charge properly and is producing an extremely loud and disruptive noise, which is not normal. My previous vacuum cleaner did not make this much noise. I first requested a service appointment on July 14, 2025. On July 15, I received a message stating that a technician was on their way, which was a lie, as nobody ever showed up. Following this, I was sent a service receipt as if a technician had actually visited and performed work. On July 19, I filed a complaint, and the next day I was contacted and given an appointment for August 3, 2025. I do not understand the logic behind scheduling an appointment on a Sunday when service departments are closed. This clearly shows that they are giving out random appointments with two-week intervals simply to stall and get rid of me. Unsurprisingly, no one showed up for the August 3rd appointment either. Today, I wrote to them again via their WhatsApp line, and they have now scheduled a new appointment for August 19, 2025. It has been almost two months, and they have not been able to come and inspect this broken robot. This entire process has turned into a joke: they create an appointment, fail to show up, and then reschedule again and again. How long do you plan to continue this? Are you making a mockery of me? I will also be filing a complaint with the Consumer Arbitration Committee. I demand that the faulty robotic vacuum cleaner be collected and a full refund be issued as soon as possible.