If it is temporary ban, you should just wait. You can try to appeal your case if you feel that the reason for your temporary ban is in error. Also, it is important that during your temporary ban that you also do not post with a new account or an alternate account. If you get caught, your temporary ban will transform into a permanent ban.
What if it goes like this "
You have been permanently banned by a forum moderator, probably due to spam or plagiarism. You may appeal here, but your chances are not good" Is there a chance for this? I've read some quotes and allegations about this topic and in my concern that most of this kind of a problem has not yet solved or not given a chance just once, is it easy to be banned without any warnings?