Do you think the "ban system" is some kind of "warning system"?
If you are banned, you are banned, that's it. It's like the court in real life...
Thier decision is your law. You break yet another rule when re-registring a
new account. I would suggest you to contact that GM that banned you and
tell him that you diden't knew and never ever will do it again. It's still his decision
if you will get un-banned. Stick to the rules, read them before you enter the game.