Horrible service

I had a visit to the optometrist on the 30-01-2019 Medical aid didn't pay my full optometry bill for the visit and had to pay part of the bill although I had saving in my medical aid account. I was told I could claim from discovery for the funds that I paid from my own pocket and did that on the 19-02-2019 sent an email to discovery of which I received no response from them and sent follow up fast forward I called discovery on Tuesday 26-03-2019 was told that fund were released and it would take 48 hrs for it to reflect in my account, received another call and the send person confirmed the same thing asked if they would have the funds in my account by Friday she said "yes," It's Friday 29th March called in again to discovery because the funds have not been received and cause I received an email telling me payment would be made to me on the 15-04-2019 and was told that my account is on monthly payments and not daily. Discovery service is so terrible I have been pushed from pillar to post and needing to constantly call them to try get my issue resolve, when you email you don't get a response. Why wasn't I asked initially when request was sent whether I wanted monthly or daily?