Getting reported for no reason!?

Okay before you say "there must be a reason" let me tell you what happened in game. I was playing as nunu in aram and everything was going fine till first blood. The enemy team got it. And then my teammates started speaking some language that i am not familiar with... At some point i got really annoyed because they were saying something about "nunu" and i just asked them if they can speak english. They both used caps and said "NO STFU". I ignored that but they continued. Mid game they suddenly started speaking english but in a rude way to me like i did something bad but i did the oposite...I was trying to give them tips like to buy oracle for teemo and not focusing the damn tanks. Late game i saw that they were still focusing the Shyvana and Pantheon which builded tanky. I tried to give them a tip again and told them to focus Annie and Ashe but they ignored that message. In the end we won but what do i see then? "You were reported for bad behavior" What the heck!? What was i supposed to tell my teammates ""STOP FEEDING U NUBZ GET A LAIF" or what!? I guess they were premade but i am getting reported for no reason with bad behavior because they were mad.

What if i get reported multiple times and my account gets banned for me trying to communicate with my team?! This is not fair at all they were cursing all game calling me and the enemy team "kurwa" or whatever that is i dont really know what that means and i get a report...-sigh-

Sorry for long post here is teemo