Okay, for the slow ones i will explain it: There is a duel server. That is where you duel each other. On Battle and Siege servers you are not only teamwounding on purpose, but you are also griefing your team by killing/wounding each other. The only exception is after you have won the round on battle, because at that point there is no way to grief your team. But even then i recommend you don't teamattack random people, because ban requests will go through if you attack a person that really doesn't like getting his score screwed with by some random troll.
And common sense, first rule of all. You kill your teammate in a friendly duel, getting wounded quite nicely yourself and 10 seconds later enemies are at the flag. Ever thought about that happening? Because my common sense is telling me that there is quite the possibility for that to happen, so, i just don't kill teammates on purpose, EVER. It's that effin simple.
You'll be unbanned tomorrow at the same time, we're done here.