Flaming in friend chat

Hey guys. I need an answer. Can someone tell me if you can get banned for flaming in *friend chat*. I don't know how to explain it but when you go in friends list and select someone to talk. I'm talking about that chat. Someone abused me and then blocked me in that kind of chat and i don't know what to do. I know in game chat you can get banned for flaming, but I don't know about the friend chat.
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