Premades

I was recently in a game of LoL, hoping to have some fun. But i guess thats impossible now because premades exist. I was matched with 4 premades, and all of them flamed me for no reason at all and blamed everything on me, but when they typed in all chat they where all sweet and friendly to the enemy team and telling them to report me for flame and abuse. One of the premades i was with even made sexist comments. I reported them all, but i doubt they will so much as get a warning because they all probably honored each other with cancels out the warning or something. Right now it seems that if you get matched with 4 premades, there is nothing you can do about it. They can flame you, and report you with no punishment and its truly sad that they are free to do whatever they want. They will never get punished, and they can carry on flaming on league until they quit.