Claim rejected twice despite PMB letter of approval.

I had a prescribed minimum benefit approved for 12 sessions with a psychologist. I put the claim in for several of these sessions. I had to claim for each session separately. I attached the PMB approval letter after which I got a call asking me why I did that. I did it so that the people managing the claim would not try to deduct the amount from medical savings. One of the 7 claims was denied despite the PMB being approved. I called Discovery to notify them of the problem, and the lady was very apologetic and said that I was correct that the claim should have been paid nas I had an approved PMB. She told me to resubmit my claim. I have now received notificatioon that the claim has ONCE AGAIN been rejected because my medical saving for 2018 was depleted. IT IS A N APPROVED PMB!!! How do I get that across to your staff that clearly do not know how the system works?

I am currently waiting on the line for a "s****ed consultant" to answer the phone. PS. Discovery, your automatic telephonic referral system has no option of "they ******ed up my claim and I need to speak to a human not a machine".