I am sure there are topics on this but its important enough to flood the boards. There needs to be a way in game to report players. I just had a match where a player i kept jumping off the ledge to lose all our team lives. We pushed through and kept playing and earned more lives. I guess when enough time passed he came back in and found he could not join another match so he stayed in that one and burned lives as we collected them.
I love your game but it should not be so easy for one person to ruin it for other people.