Unfairly Terminated

I went onto Medihelp the beginning of February 2016, and I went to my GP where he sent me for x-rays on my back and to go and see a specialist. For me to be able to have seen a specialist, I had to get admitted into hospital. The hospital phoned to get an authorization number, and then Medihelp had to do a non-disclosed investigation before they could give me a authorization number. After the investigation, they came back to me to tell me that they are terminating me, due to the reason they claiming that I went for treatment on my back (which I have problems with since I was 16, due to a car accident), which I never went for. I only went for pain injections and no treatment. They are claiming that I went for infulltration injections in my back and according to them, I had a pregnancy sonar done when I went for my x-rays ,but the report clearly states that it was an abdominal sonar. Medihelp even sent me a statement where they have pregnancy consultations on the statement, but I am not even pregnant. My Dr even tried to contact them, but he is unable to get through to them. I feel that I have been treated unfairly in this regard as what they are claiming is not true at all.