I Face Turkcell Superbox Speed Drop From 100 Mbps to 2 Mbps

I have been a long-time corporate subscriber of Turkcell Superbox. I have been using Superbox for 3 years, and for more than 2 years I have been on one of the highest corporate data packages. I pay between $60 and $120 per month, and during this time I consistently received internet speeds averaging around 100–150 Mbps. My device is a ZTE MF286R Superbox modem. However, since the 5G service was activated, my connection speed has dropped drastically, both for download and upload, falling to 5–10 Mbps and often even as low as 2 Mbps.

For a service that operates on 4.5G infrastructure, I do not find it reasonable to be limited to speeds as low as 2 Mbps. It is unacceptable that a connection I have used at around 100 Mbps for years has suddenly dropped to 2–5 Mbps, and that this situation is being presented to me as “normal.” I have contacted customer service multiple times regarding this issue. Each time, I was told that my contract guarantees only 2 Mbps, offered paid add-on services, and even told things like “your current speed is 5 Mbps, sir, that’s perfectly normal.” Despite clear signs that there is an issue with the base station or system, no proper technical investigation or permanent solution has been provided, and I feel that my concerns are not being taken seriously.

Corporate lines are used to ensure smooth business operations and continuity, and being left in this condition for weeks without support is unacceptable for any business. The phone number registered to our Superbox account is 0537*******33. I request that Turkcell restore my connection speed to the previous levels of around 100 Mbps, which I have consistently used for years, instead of offering paid add-on services. I also expect my connection quality to be stable and maintained at a level appropriate for a corporate customer.