To players who are looking to reform/not get banned
Of course the best advice is to just not be a jerk to your team.
However, in the event that you happen to say something rude or offensive to your team before you realize what you are doing do not engage in a flame war with them.
Insulting one player on your team may get you one report, constantly filling the chat with garbage will usually get you 4 reports because you are annoying everyone on your team and not just the player who is pissing you off.