Discovery **********: Takes our money and doesn't pay the medical bills

I was referred to a supplier who Discovery says has been flagged, as such they are refusing to refund the medical expenses I have already paid. I have sent the claim several times and they do not respond. I then completed the special MSA funding request again several times and finally got a call on Friday 5 August at 14h06 which lasted 6 minutes where the gentleman told me that the flag had been lifted and that my claim would be refunded. I received an email this week telling me that the claim will not be paid. I was referred by my GP to this medical supplier. They have provided a very good service and I have received results that have helped in improving my health and that of my family. As such I expect the medical aid to honour the payment and refund my money. This is my medical savings and I should have a say in how I want to spend it. I feel that it is unconstitutional that Discovery does as they please with our money. Even after I have completed the MSA form for other claims, they have refused to pay in full, they refund part of the claim stating the claim was above the amount. Again I say, this is my money and if I had to pay that amount to the Dr, then I expect that amount to be refunded to me IN FULL. They take our money and jump up and down if it is late, but they fall short of being upfront, honest and ethical when it comes to paying. I contacted the supplier to ask if they knew they had been flagged. The accounts lady had no idea they had been flagged. Again this points to dishonesty and cloak and dagger behaviour on the part of Discovery.