Fake GMs, look out.

So, I was leveling a warlock and I see I had a real-id friend request. The name (which I won't be saying here, don't want to violate ToS) was similar to one of my friends and I clicked it, and later realized they weren't the same person.

However, as I am trying to think of who it could be, they whisper me saying I violated the ToS by trading large amounts of gold to another account. However, this was a recently power leveled recruit a friend account and I was paying for their dual spec/skills all the way up through 60, mounts, etc. They said the IP was traced to another country (which is impossible), because my friend I recruited has only been playing WoW over at my house, which they were staying at for a few days.

Now I'm slightly worried because of two things, they found my e-mail. (WTF?) and added me to real-id. Another thing that worries me is the possibility of it actually being a GM and me saying stuff like "Cya scammer" and being banned, lol. I was always under the impression that GMs would only whisper you in WoW and would have a [Blizz] insignia next to their name, is this still the case? Or has there been an update I've missed on how they handle their visits?

Any feedback would be appreciated - blues or not, anyone experiencing the same issue lately, etc. etc.