The staff is not competent, the mobile Internet stopped working, while the connection worked, the SIM card was changed 3 times, the "Data transfer" service was turned off, and as a result, they said to change the phone, although the Internet did not work on their phone, and everything works fine on the phone they were told to change with another SIM card. The problem was solved by contacting the support service, where they connected the service, as it was called "Reconnection" and everything worked.