I pulled a credit report on XX/XX/XXXX and noticed 2 charges from Receivable Management Group on there, one for XXXX and XXXX. I have never heard of this company, or been contacted by this company. So I called the number listed on the report on XX/XX/XXXX. I asked what these charges were for. They couldn't give me specifics but stated it was for services a company called XXXX XXXX XXXX provided. I asked for a statement of charges or verification of charges. They also gave me a number for XXXX XXXX XXXXXXXX  along with an account number - and asked I call them for more info. So I did. When I did, they noticed the one charge for XXXX was billed under my maiden name, and to an address I haven't lived at in over 10 years. But they let me know it was XXXX  services for the time I went to the ER over a year prior - service date of XX/XX/XXXX. I stated to them I had insurance with XXXX XXXX XXXX which was provided to the hospital at the time of service. All other outfits billed insurance accordingly. And I had the statement of benefits from that time and XXXX XXXX XXXX never even billed insurance. Nor did I ever get a bill from them directly. I gave them my insurance info, and the associate there said they would submit to XXXX XXXX XXXX directly. I asked them to remove this from collections as it was their error and they refused. They did say once payment is received from insurance, likely within 30 days, it will be removed. So I waited 30 days. Called XXXX XXXX XXXX  again on XX/XX/XXXX and spoke to another associate. They stated they did not even submit to insurance, that it is still being reviewed. I said it was unacceptable as this is not my debt and is causing my credit harm. She asked for my insurance information AGAIN which I provided, and she said she would escalate and get this submitted again. I waited another week, and called my insurance company, to see if any claims were submitted to them by XXXX XXXX XXXX, and they did not see anything. XXXX XXXX XXXX even called XXXX XXXX and spoke to someone whom again asked for all the insurance information and even asked for the address to mail the claim. Then stated they would submit this for insurance because again it still hasn't been done. This is not my debt. This outfit is in network and had they billed insurance properly to begin with they would of been paid in full by now. And they are clearly stalling and damaging my credit because of their mistake. This is legally not my debt.