In XXXX and XX/XX/XXXX my hospital submitted charges for services performed by an XXXX, resulting in insurance paying as out-of-network. Hospital has been repeatedly billing me for the portion which which would have been paid by insurance if claim had been submitted properly. 
I personally visited hospital billing office, made phone calls and sent them a letter advising of dispute. At XXXX point they said they would stop billing for those charges but they recently resumed and then turned the charges over to a collection agency. 
Last week ( XX/XX/XXXX ) I received a call from the collection agency. I tried to inform the caller that those were disputed charges for physician services being charged by a hospital, but he interrupted me shouting that we had discussed this before and the billing was for hospital charges not physician services. His statements were not true. We had not discussed it before, and the charges are for physician services. 
I called the hospital customer service number and after placing me on hold while consulting with billing, they told me that XXXX of the charges should not have been submitted to the collection company and they were withdrawing that XXXX for now but may re-submit it at a later date. The other charge remains with the collection agency. I have advised the collection agency in writing that the charges are disputed. 
I have paid all of my legal obligations to that hospital. The only charges I refuse to pay are the ones that resulted from them billing incorrectly for physician services, resulting in insurance not paying as in-network. 
I was being treated there last year for XXXX and am now being treated elsewhere. The incessant billing, and now the abusive phone collection attempt, is increasing unmanageable stress to a level that I believe is harmful to my health and is interfering with my recovery.