The technicians are fine but Sentara billing is a ...

The technicians are fine but Sentara billing is a nightmare. They submitted the wrong code to my insurance company so my insurance company denied coverage. Many, many calls later they have not corrected the problem and I am now getting bills from their collection agency. I am continuing to refuse to pay because it s their error and they should fix it. Why should I pay for procedure that my insurance would cover if they submitted the code correctly? Update: Sentara has not provided me a requested written response to my letter but they have filed a negative report on my credit report. Once again I am being penalized for their error and I m not sure what recourse, if any, I have. AVOID!!