It gives me the loss when the other player quits

Me and my friend were playing 2v2 rivals and we won a game 3-0 (before the other 2 players quitted) they paused the game to quit and instead it says this to me: you retired from the game because there werent enough players. That game was my promotion game instead now im back 2 games away from promotion (if needed there are clips and screens of that happening)