Have a lawyer send a letter to the hospital medical record department requesting a copy pf your medical record, accompanied by a medical record release form, signed by you and authorizing the lawyers access to that record. This often gets the attention of the hospital risk manager, who will then halt all collection efforts. Errors in patient care are not uncommon. (http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1117772)