Your ban expires in 2011 July the 29th in every room, this means you have been banned back on July 2010 for one year, this in turn means you have been banned for Hacking ( maphack , cracked ggc , drophack , or so ) I can't accurately tell you what's the fault because as everybody knows by now all our old archives were deleted without previous warning losing every piece of information we had.
But the fact that you are added into our banlists for a constant period of time signifies it was a legal ban.
Either your unban request got denied -if you opened one early on- or you should have shown some interest on your accout way sooner.