Hello pal;
If you had been banned wrongly you can appeal at
viewforum.php?f=19 but don't forget 'BEING HONEST' will get you the unban. Lieing will not bring you anything. Be honest and write there what happened exactly. If you used hacks, admit it and apologize and hopefully admins will unban you and/or you will get unban after a while (like 2 weeks,1 month later; up to the admin) Also
viewtopic.php?f=12&t=27617 this guide would help you while appealing so I suggest you to read it and appeal with these advices.
Good luck.