Fidelity Creditor Svc. Reported in error on my Credit Report and I have no knowledge of this account. Glendale, California

A claim on my credit report showed up as opened 6/1/2011 by Fidelity Creditor Svc, a collection agency representing Century City Hospital.  They have payment status listed as Seriously Past due and turned over to collection agency and also Claiming an amount of $208,700.00.

I have contacted them and let them know that I have no knowledge of this account. They are claiming that it is from surgery July of 2008.  I let them know that over the past 3 years I have had no correspondence, billing or phone calls from either them or Century City Hospital.  I did have surgery in July 2008 for PPO insurance covered procedures.  I have contacted my insurance company and they have no claims submissions from Century City Hospital for July 2008, which seems odd because Fidelity claims that they received $167,000 from insurance for this, and the balance is
$208,700.00.  Neither Fidelity nor Century City Hospital has provided me with any paperwork, itemized billing or proof of charges.   As this is a collection agency, I don't know what information that they are privileage to and what is none of their business.  I have contacted all 3 credit bureaus and disputed this and written the Attorney General and Federal Trade Commission. 

Any advise would be greatly appreciated.