Incompatible Turkcell SIM Card Causing Mobile Signature Malfunction

Approximately three weeks ago, I purchased a new SIM card from Turkcell as my old SIM card was defective. I paid a fee for the replacement. However, once I switched to the new SIM card, my mobile signature subscription was cancelled without my consent. On September 4, 2025, I attempted to reapply for a mobile signature, but I received a notification that my SIM card was incompatible. On the same day, at around 14:00, I contacted Turkcell customer service and spoke with Ms. E***. She informed me that my SIM card was incompatible and needed to be replaced again. However, my previous SIM card was 128 KB, whereas I was given a 64 KB card without any prior information. I was not informed about this at the branch. Had I been properly informed, I would have specifically requested a mobile signature-compatible SIM card and would not have faced these issues. The consequences of this situation are as follows: I am forced to pay again for another replacement SIM card, My mobile signature subscription was cancelled, which caused delays in my e-Government transactions, I now face the risk of banking transaction blockages due to another SIM card change, When I requested that a complaint record be created, I was told that no complaint could be opened against the branch. Therefore, I am filing a complaint against both the Turkcell Gediz Branch and customer representative Ms. E***. My Requests: That I be provided with a mobile signature-compatible SIM card free of charge in order to resolve this issue, That necessary actions be taken against the branch and the customer representative involved, That my mobile signature service be reactivated with proper support provided.