My doctors office, XXXX XXXX XXXX at XXXX XXXX XXXX in XXXX, tried to defraud my insurance carrier and myself by billing XXXX for the same visit with XXXX different billing codes. I tried to resolve the issue with the doctor 's office directly. After being given the run around, I filed a claim with the Texas Department of Insurance and XXXX. The doctors office corrected their bill and resubmitted the claim. The claim was then paid correctly by my insurance company. During all of this, I received a letter from a collection agency, RS Clark and Associates. I contacted them to ask for validation of the debt because I was told by the doctor 's office that they did not turn in my information. I then called them several times and never received a call back. I looked at my credit and I have a derogatory mark for an account in collections. I have asked them to remove it and they say they can not.