After an emergency room visit, the hospital sent the wrong billing codes to my insurance. This was clarified to the billing department at the hospital and they promised to amend. They never did and sent this as debt to a collection agency. After discussions with my insurance, the insurance decided to pay me directly for the amount and I subsequently sent payment to the collection agency. I then received an invoice from the hospital showing I owed {$0.00}. Two weeks later I get another letter from the collection agency to collect what appears to be the same debt under a different account number.