Between 23:03 and 23:39, I experienced a serious issue with the “Big Festival 40 GB” package on my Turkcell line. Within this package, I had a total of 10 GB of remaining data—8 GB from my existing balance and 2 GB from the Shake & Win campaign. Despite not actively using my phone at all during this period, all 10 GB was consumed in less than 30 minutes. Although mobile data was turned on, I did not pick up my phone or perform any action. When I checked the usage details, I saw that data usage was recorded 28 times within this short timeframe, each instance showing exactly 286 MB of consumption. This clearly does not align with my usage habits or the fact that I was not using my phone at that time, and I believe this indicates a technical or system error. I contacted Turkcell customer services, but I was informed that no action could be taken. I request a detailed investigation into this abnormal data usage on my line (0541 799 7***), which I use in Bornova, Izmir, within the scope of the Big Festival 40 GB package, correction of any error if found, and a refund of my internet data.
On October 10, 2025, on my Turkcell postpaid line, it was reported that I used about 12 GB of internet in total — 3 GB around 12:00 p.m. and 9 GB around 1:45 p.m., on the same day my package was renewed. However, it is impossible for me to use such a large amount of data in such a short time through...
On February 20th, 2024, I purchased a 40 GB data package for social media. This package also included 30 GB bonus data. My bonus data expired on March 10th, 2024, and then my 40 GB package and an additional 45 GB package kicked in. However, on March 16th, 2024, I received a message stating that I ...
I am raising a complaint regarding my 26 GB data plan with Turkcell, which I've used for 10 months without issue until the last two months, during which my data has run out unusually fast. Last month, my package was depleted quicker than expected, despite only using social media, browsing, and occas...
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