I have a different issue, some SR players are good enough mechanically they get into my Elo range after a relatively short amount of games.
Had a 60 Dominion game Olaf go bot lane, he went b after every time the enemy laner went b, and concentrated on farming to the exclusion of all else. The usual Shurelya+Randuin's build.
He said I was trolling him for coming to gank bot (which we all know doesn't always happen). He asked in /all for everyone to report me for trolling - for building Executioner's Calling on Jax >.>
I remember from ages ago someone who rage-quit because we ganked bot lane, so didn't let him lane 1v1 properly...
But it happens in all game modes. Had a 3v3 normal game some months ago where our Renekton was losing his lane, but we were winning the game pretty hard due to me and my friend. He started a surrender vote, we said "lol no", so he rage-quit, though we were winning >.>