Something should be done about people who quit mid-game.

I had 3 competitive games in a row and each one of them one of my teammates quit in the middle of the game. Because of the clearly disadvantage we ended losing AND I DOWNGRADED A WHOLE RANK, I just think that is not fair that the game deducts the same rank points when you lose with a full team and when you lose with because one teammate quit. Because is not my fault someone left and we were 5 vs 6, is not skill issue is just numeric disadvantage and I shouldn't be punished with the same points.