A kind girl told me everything in detail on December 31, helped me log in, and undressed everything according to the rates. And the fact that you can't get a SIM card for Russian citizens for less than a month is not her fault.
It's just a waste of time to walk around the MTS salon, I explain why: in 3 different salons, in the 1st main office and 2 regular salons, they provide different and incorrect information, and the problem was that the SIM card number was withdrawn, without any notification with plus balances. The number of which was linked to the passport, and at the moment I discovered it, as it turned out, another person was already using it. This card cannot be returned. And I spent another week on Oriental studies for another issue. I can only thank the best operator in Belarus for their unlikely work and the specialists who know their job.