Incorrect code used when claiming on medical aid

I went to see a gynae in 2023 as I was pregnant (in my early trimester) and I was using medical aid with discovery and I had activated my pregnancy ,when claiming the gynae used an incorrect code ,discovery sent an email to me and ccd the ***ne to fix the codes and I also sent her an email she adv she will look into it ,she did not now her debt collector keeps calling me and they telling me my account will handed over to her lawyers she is a **** and I need this sorted as when I call her reception they don’t even take my calls anymore