How to deal with trolling premade reports?

Yesterday I found myself playing with a 3 man premade team which reported me for no reason... better said the reason was I wanted to pick mid while one of them (Romler) wanted it and this is the response I got (I'm Jhaco) :

http://img256.imageshack.us/img256/3894/retardd.png

So I went jungler cause I just wanted to play the game. They flamed all game long and called me a noob with no reason. We won that one 4v5 cause top snowballed hard thanks to 2 early ganks but I encountered them next game, and probably they reported me again. We lost that one cause their mid (Romler again) fed like crazy.

My question is, is there a way to "protect" yourself when facing this kind of as*holes? I'm usually a very respecful player and I never trolled or flamed just for the sake of it as apparently 90% of players in LoL do, so it annoys me pretty much to get reported by these idiots.

(btw this is my score of the two games, as you can see I was not feeding and doing ok overall http://imageshack.us/photo/my-images/268/scoreoy.jpg/ )