HELP

to the extent of my knowledge i have never left a match but i keep getting the penalty every time i try to get into any kind of game! i have tried everything yet no matter what kind of game type i try to get in i keep getting the leave buster. each game i try to play requires me waiting 5 minutes in a low priority queue. its frusting being penalized for something i didn't do and totally ruining my experience if somebody knows how to fix this let me know