If you got banned, you can appeal for unban here.
An appeal should look like this:

1. Your nickname
2. Ban reason
3. Comment

Indicate your nickname in a topic title

Incorrectly written appeals can be deleted or ignored.
Appeals like "I've been banned for no reason" are not considered.
Appeals containing insults in relation to admins or the very server is a straight way to eternal ban.

If you've been banned for cheats, you have a right for 1 unban, if you admit the fact of using cheats.