People in Clans that duoq in normals.

I've noticed a trend where members of a same clan on the same team will intentionally try to tilt their teammates. I had a game where the whole clan essentially admitted that was their sole goal in game. So their intention is to cause you tilt, so you rage, and report you.... In my game, I didn't rage but I became aware of their objective after I voiced my opinion on my supports play style and how she/he refused to be proactive in my lane and just go to her teammates' lanes.

Has anyone else experienced this?.. I'm cynic so I assumed the worst from people and it looks like I was correct this time around.