Hello Natz,
I can't really say anything about what happened because I wasn't there. Next time you think an admin is making a mistake, wait until the mute is over and talk to him. Otherwise make a report like you are doing now.
Because you changed your name while you were muted and tried to communicate with your name, the ban is understandable.
Just wait until the ban expires tonight.
Sincerely,
Pelixus