The last login at your cpanel was from this ip:
59.96.139.162
And who ever that was must have changed your password. Since you say you couldn't login then I assume it was somebody else so I blocked that ip and changed your password. I will PM your password one more time and when you change it at your cpanel, do not use uppercase or special characters.
There's a possibility that this poster could be someone who doesn't actually own the account.
How did you ban the IP?
EDIT: Actually, both poster and registration IPs trace back to around the same place in India. 59.96.139.162 is somewhere else, but still in India.