The admin who banned you is no longer with us so I'll handle it I guess. You were banned 2.5 years ago, and have 4 bans on record for teamkilling, with other bans being what I would consider "miscellaneous". I think the permanent ban was a harsh step given your previous history before that ban, so I will unban you. But, please keep in mind that if you continue to break rules again you will be punished severely.
Happy Hunting,
Lotus