I understand the utter distress of your team leaving you instantly, trust me. Every game I play at least one of my teammates quit. But not everyone can finish a game, due to real life things i.e. internet connection farts, power outages, having to leave house, etc. But then again, people quit because they are mad as heck (which I do sometimes because I'm not going to sit on a video game and piss myself off to death) or they are just simply losers. I honestly feel like banning someone for quitting is really unfair. But having uneven teams is unfair too, so it will always be a lose-lose situation.