Stop responding to trolls...
Report them and move on. Don't bitch at them. Don't argue with them. Don't respond to anything they say. THEY WANT YOU TO BE PISSED! How hard is that to understand? Want to know what responding to them accomplishes? Nothing. They get what they want which is you getting pissed and now it is possible for you to be reported for verbal harassment and offensive language (even if they deserved it.)
Yes, they are fucking assholes and deserve a few cross words and hateful remarks. Sure, venting your frustration can make a shitty situation feel a little better, but in the end all you are doing is making a bad situation worse and letting it get to you even more and making it more likely to affect future matches.
Just ignore the pricks and move on. I just spend the last 30 minutes telling my team "ignore him" and "just report him and stop responding to him". Amumu did and he had a better match for it. He was noticeably more positive. Vayne and Azir didn't and they both just got in bitch fights with the troll and raged and died and raged more and just made the troll that much happier.
Ignore, report, move on.
/All "Knock, Knock"
/All "Who's there?"