You want a specific rule that defines the length of a ban, they don't have them. They use their derision, taking the users history and each incident into account.
It sounds like you've been watched for a while now. Your attitude after the incident was bad, it seems to continue now, you feel you've been wronged and are shouting to anyone who will listen and not listening to anyone.
Why would they want you back in their server after this? I wouldn't. They don't have to let you race their.