Do you know if you were temp banned? I've heard of this lasting several weeks as a worst case scenario.
I had this problem after hopping in/out of games and characters too often but it only lasted 26 hours.
Tried using a VPN but this did not help, and may have contributed to a longer ban from what I've read.
I was able to log into my account over at a friend's place but was unable to log in when I returned home.
That's some real shit timing, sorry to hear, hope it fixes itself.