WoW Account Hacked Again?!? Authenticator??

Ok, so a few months ago I took a break from WoW because of football, anyway, a month ago i tried getting back on but my password wouldnt work. So i changed it and got on and my main was moved to a different server, my other characters were either naked or deleted and i was pissed. i tried contacting blizzard to get it all back and my password kept getting changed. I noticed that i had a keylogger virus. So i contacted blizzard again and they temporarily disabled my account so no unauthorized access could be made. Anyway, that was 3 weeks ago and i got a new computer for christmas and now my password is secure and no more keylogger virus. Just last night after calling and emailing for a week i finally got my account enabled last night and i was so happy. Now i needed a subscription so i waited until today to add one and when i went to do it i tried logging in and i saw that i needed an authenticator 6-letter key that i did not set up. Now i cant get in!! Does this mean i got hacked again?!??! If so, what do i do? i trying to call them again and im on hold. Im so sick of this, i havent been able to play in a month cuz of all this!