Ingenico POS Nightmares: Undelivered Repairs, Unfair Fees, and Neverending Delays

I own an Ingenico cash register POS system. In 2022, my device malfunctioned, and the service center diagnosed it as a motherboard issue. I had it repaired by an authorized service provider, but when the device returned, it consistently displayed a connection error. Each time I contacted the service, they claimed there was no problem and provided new connection settings. This issue persisted for a year, and I have call records as evidence. On September 27, 2023, the service finally acknowledged the problem and took my device for further repair. Subsequently, they charged me 796 TL. Upon reviewing the records, I discovered that the issue was with the charging unit, not the motherboard as initially diagnosed. I informed them of this, but they insisted that there was no problem. In a subsequent call, I found out they were charging me approximately 500 lira for a fault detection fee and device maintenance fee, even though they had misdiagnosed the issue. Frustrated by what felt like customer exploitation, I requested my device's return without further repairs, paying an additional service fee of 140 or 160 TL. To make matters worse, despite daily calls and promises of delivery, my licensed cash register POS, dispatched in Istanbul on 03/10/2023, had not reached me by 06/10/2023. I demand action against the company and service provider for victimizing businesses like mine, despite our adherence to their terms and reliance on cash register POS systems.