i was walking through orgrimmar when i found someone sharing a link what, supposedly. was from warmane and oferred some free credits, i clicked on it and i my account was stolen. once i could recover the password i found out that my account was banned
One and ONLY legitimate website is "www.warmane.com".
GMs have "Blizz" icon in chat infront of name (like this https://www.youtube.com/watch?v=0xocqfMttcs), [GM],GameMaster or whatever other combination of letters are not from real Game Masters, try not to fall for obvious phishing attempts.
For extra protection you should use Two Step Authentication, and if you are not sure, you can always type in your user name and pass like "aaaaaa" and "bbbbbb" if you manage to "log in" it is not a legitimate website.
Since you already gave away your account information you could try contact [email protected]