I was billed on XXXX/XXXX/15 for the ER doc who saw my son XX/XX/XXXX. The initial insurance payment left me owing a balance of {$520.00}. After talking with the insurance carrier - XXXX at the end of XXXX, the insurance company reprocessed the bill, because it was initially coded wrong, and the entire bill should have been covered. I let the ER physicians billing office know and they said they would put a hold on the bill and indicate it was being reprocessed. I got a collection letter XX/XX/XXXX for the {$520.00}. After calling my insurance, I learned they paid the full amount on XX/XX/XXXX electronically and it cleared with bank on XX/XX/XXXX. The ER doc 's office ca n't find a record of this, but I have the EOB and the draft number of the cleared insurance payment. They wo n't communicate with the collection agency to let them know it is being researched. I 've called the collection agency. I 've been told that the {$520.00} was my " deductible ''. This is n't true. I have also provided them with a copy of the EOB. I continue to get calls from the collection agency, despite providing proof to payment to the ER physicians via the EOB.