Toxic ranked premades

Riot needs to remove the ability to queue more than duo in ranked. Was just placed in a queue with a 4 man premade group where they banned every champ I had selected and then proceeded to feed and forced me to lose my last game in my series. It's toxic troll behavior that they need to address. There's no way to prevent this from happening and people who do this won't get punished. This was the worst thing they've every implemented in regards to ranked queues.