Sorry but if enemy is near and somone hit me its ok shit happens. I kill guys who are pure Tk when he attack me or my teammate wich no reson where are no sing of enemy. But when that happend you can ask: "why you kill him" is that so hard? Saing that rulse say i must ban you because you kill teamkiller ist very bad argument.
What if I kill some guy who I don't like, then when asked I say he was a teamkiller?
You're not omniscient, admins aren't either. Sorry, but it just doesn't work that way.
Anyway, this has gone on for long enough. You can make another thread when/if you decide to accept the rules.