Dear Turkcell Representatives, I am a Turkcell subscriber and recently discovered an unauthorized call forwarding on my line. The forwarding appears to have been made to +90 (539*********27). Despite trying the ##002# and other deactivation codes, the forwarding remains active. This situation raises serious concerns about the security of my line. Therefore, I request: (1) the complete cancellation of all call forwarding settings through your system, (2) information on when and through which channel this forwarding was initiated, (3) assistance in ensuring the security of my SIM card, including replacement if necessary, and (4) an investigation of this matter by your security department. I kindly ask that the necessary checks and corrections be made regarding this action, which was performed without my knowledge or consent.
When someone tries to call me while I’m on the phone using my Turkcell line, they constantly get a busy signal and the call doesn’t come through to me. In the call forwarding settings, the number 0539*****27 appears and cannot be deleted under any circumstance. I’ve tried resetting the settings myse...
On October 24, 2025, a number transfer and subscription process was initiated for my line 5326****59 without my knowledge or consent. Although I was completely unaware of this situation, I had to personally visit both Turkcell Corporate and Vodafone Corporate stores and spend my entire day trying to...
I applied for a number porting process at a Turkcell store, and I was given a SIM card. After the number porting was completed, I inserted the SIM card into my phone, only to find that a different number appeared on the SIM card. My number shows as deactivated. Despite calling customer service 4-5 t...
Dear Sir/Madam, I have been a Turkcell postpaid line user for approximately 20 years, during which I accumulated 28,000 points through your loyalty program. However, as of today, I noticed that my points have been reset to zero without any prior notification or consent. This situation has not only u...
My Turkcell line has been giving me a lot of trouble for a while now. Whenever someone attempts to contact me when I am currently on the phone, their call is automatically directed to a busy tone. Unfortunately, I have no idea whether I have missed a call because I do not receive any texts or notifi...
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