Turkcell Charged Me for Wireless Usage After I Paid and Gave Me a Used Number

Turkcell has an endless and constantly increasing wireless usage debt. Even though I paid the full amount in advance, it was not deducted from the current balance, and customer service has been completely unhelpful in resolving the issue. I was happy to get a new number, but I keep getting WhatsApp calls from Syria and Iraq, and I later found out that the number previously belonged to someone else. This is a serious privacy concern, and I have no idea who else might have access to my number’s previous connections. Turkcell has seriously deteriorated in quality. The wireless usage fee is another issue. If these problems are not resolved, I will file a complaint with the Ministry of Justice through UYAP.