remove ban problem

hey one of my clan member is perm banned from my server and he can't rejoin the server. i checked the ban list but he's name is not even there even his guid and i'm so helpless right now plssssssssss someone tell me how to remove him form banned thingy??? and i never banned him. plsssss somone help me :confused: :confused: :confused:

sorry for trouble i got my solution one of the hacker stole my friends guid and when i banned him i din't know about it, then i went to banlist and checked the guid which was totally matching with my friend's guid. nw my friend is unban the only problem remains for that hacker what if he comes again and do the same thing and i hate that guy anyway thnx