This probably should go into this thread:
Account fraud / breach: my account compromised, awards taken, etc. (link)
Supermarigm - you're not the first person this has happened to, and unfortunately - not the first person who has had this experience.
This sounds like a job for JonNYC who is the resident Flyer Talk expert on this situation.
If it's as you describe - don't worry eventually everything will be restored and corrected.