They arent multis and they didnt cheat.
It looks like you overextended yourself and made yourself the obvious target for the other two players.
I myself, do not like playing 3 player games. Someone always feels like the others are cheating.
As DJPatrick said, I would recommend checking out the Training Group
viewforum.php?f=341Also, it is a major violation to intentionally deadbeat out of a game. In the future, make sure to play all games to completion.