laggin and getting kicked out all of a sudden????

I made a new account and i thought this would be a perfect chance to get a good record.
So i start playin and i lag a lot of of a sudden. Like no one is moving but me.
Then i leave the room and it counts as a lost. I played around 53 games and got 37 lost and 16 win. I know u think i am a noob but then i check my desertions which is 37!?!?
I never quit a game so i never actually lost but it is just the laggin...
HELP!!
-_-