Why the hell do you put me in the same flex game as the same 3man premade I reported last game?

I'm doing placements in fucking low silver - there should be thousands of players. I took 3 minutes (went to the washroom, got a drink) after losing with a toxic 3-man premade before requeuing, and immediately got put in the next game with the same group of players.

Like seriously - I understand that in Challenger you can't avoid this. BUT SILVER?

Fix your matchmaking damnit.