April and May doctor accounts

Discovery Health authorized the wrong code for my PMB condition. After depleting my savings with claims that needed to come out of my PMB benefits, I only realize that they have the incorrect code. My doctor's receptionist and myself then began trying to sort out this query. They told my doctor's receptionist that she only need to complete a new form and they will change the code. We completed a new form just to get rejected. I am trying from April 2015 to sort this out with the medical aid and every time I phone them, they will look into it and come back to me. This never happens. This morning when I phone them and got told that the wrong forms were completed and other forms need to be completed I just had enough. Maybe posting on Hello Peter will get me a proper answer.