Been banned before for valid reasons ( raging,cursing etc.)
But 2 days ago i got reported by my team for typing greek in chat, because i wanted to communicate with my mate that can't speak english.
What can i say... These kind of things will drive the community away from this game. Your only chance of not getting reported every single game is to play solo queue,which matchmaking sucks or play with 2-3 friends.
I hope this shit gets fixed before official release,otherwise it will only hurt this game.And by the way i have spent almost 30 euros and played over 1500 hours of dota 2, but i am starting to play less and less for this reason.