The ban was valid. Logs show intentional team-killing beyond doubt.
@ChristopherR
Hitting each other with your friend, only for him to end up reporting you...and you getting banned. I am not sure what you expected?
1. You are both trolling the whole team by diminishing your chances to win.
2. We don't have the time to evaluate if the person who reported you was your friend nor does it make a difference to us, you're not just trolling each other, you're trolling your whole team as mentioned above.
Someone breaking the rules (team-hitting you) doesn't give you an excuse to break the rules yourself (team-hit them back). This is written in Code of Conduct. Report the player and he'll be punished. Does this represent an issue as the player is essentially ruining your game and you can't do much about it at that moment to prevent it? Absolutely.
We understand this is an issue and will try to resolve it in a timely manner.