Too many Disappointments that it really hurts. What a struggle to deal with Discovery

I truly do not know what happened to discovery. No one seems to know their own processes. I put through a claim on the discovery Health App on the 9th of November for medication that I had embarrassingly and wrongfully paid cash for on the 5th of November. Claim was rejected and I was told an invoice is required, and on the 17th I resubmitted the claim with the invoice. Till today I haven't received the refund when I tried to check on the App both the claims have now disappeared from the claims I see on the App but the consultant can only see the claim I sent on the 9th. I called Discovery, the consultant and her manager could not resolve this issue or escalate this to the relevant department but I'm told I need to start from scratch and resubmit the claim for the third time or send it via email for them to see it. I'm beyond heartbroken by Discovery. Because of discovery's incorrect processings this year, I owe a number of Health Care Providers of I'm even tired of continuing following up on everything before it's done right. Hyuuu!