Time zone change

there was a problem in my life when I had to move from my city ... in connection with this, I turned to technical support with a request to change the time zone ... and now there is already a week of controversy. Initially, I was told that it was impossible to do this, then it turned out that it was possible, but for -4 or +4 hours ... further, I got an employee, Mikhail, who allegedly tried to change the time zone, but because of the program, it is impossible to do this, the program does it does not allow ... I clarified the specific reasons, is this a technical problem? is it a failure problems with my account? I was told that more information like “the program does not allow this to be done” was not given to me. I asked to change my consultant. As a result, he began to send me template messages, without answering my requests. I want to know where I can send a complaint to this consultant. I want to know the reasons why it was not possible to change the time zone. Since, my present time is not convenient for me and I was shown in full how to treat EA to players