Dissapointed client

I have on 03 March 2019 bought medication over the counter at a pharmacy, the account and proof of payment was sent to Medshield on 04/03/2019 with all my details, with query number is 040319Q8W7XP on the 11 March i got notification the claim was rejected for a prescribing provider practice number i called to query this got reference number 060319Q92XFN, got a email notification again on 15 March that the claim had once again been rejected for a prescribing provider practice number - during this time i have called on numerous occasions have been told the claim is going to be processed still nothing as been done to date. I called this morning once again was told this is such a intricate issue it has been sent to a supervisor the agent i spoke to put me hold came back to say the claim has still not been paid it has to be manually processed this has been told to me each time ive called since submitting the claim. I asked to speak to the supervisor or i will take the matter further was put on hold and the call disconnected and no one called me back this is the second time this has happened my email queries have also not be responded to. I am now at my wits end because a claim of R204.92 two lines on a pharmacy account takes all this effort on my part to get processed, what is going to happen if i need to get a refund for a complicated claim for a huge amount? I am very dissapointed in the service especially that no one bothers to call back or respond to my emails i have sent.