Banned for unknown reason (possibly tk ban)

Thought i'd make an appeal seeing hows this servers the only one i can really play on due to ping issues. My username ingame is QuacksLxgic. Was playing earlier and i believe i may have killed two teammates on accident, nothing came of it so i shrugged it off and went on my way to do my duties as a sniper. Died, went to spawn, where i met up with my buddy, Cynochrome, who was gonna take me to a nice sniping spot in an APC. As he was running towards it i saw someone else making a b-line towards the same APC, so i jokingly shot around him. I may have hit him, which at the time i didnt think i did, and he shot me and hit me. So i reacted and shot him back, killing him instantly. I admit fault that i should not have shot at him in the first place, but i honestly don't understand why i was banned, or more importantly, why my buddy Cynochrome was banned. HE DIDN'T KILL ANYONE THE ENTIRE MATCH! He never even got near me after that, and he just got randomly banned.