Lower Priority Queue

Hello, I've been placed in a Lower Priority Queue for a proper reason. I've been playing games to remove it and while I was doing it one of my teammates left, result of that was giving me more games to play. I had to games where my team mate would leave the game or go AFK and because he did I got 2 additional games to play for each guy AFK.

1. Joined a game and played it completely (without AFKing or leaving)
2. One of my teammates left the game (I had 2 games where one teammate would leave).
3. After I finished the game I got first notification telling me I have 4 more games to play.
4. After I closed the notification another one popped up saying that I still have 4.
5. I've played 3 games without leavers.
6. I finished another game in which my teammate left again.
7. I got first notification saying that I have 1 more game to play. And after I closed it I got another notification saying I got 4 more games to play (Katarina left the match, I was playing rengar and had the most kills assist in whole team so I didn't afk not even for a little bit)

I seem to be gettin more and more games in lower priority queue when one of my teammates leaves (and I didn't). I didn't screenshot any of this (forgot) but I will if it happens again. This is unfair and the system has a flaw. I'm waiting for a fix to this..