Terrible service received once again

Once again I'm amazed how much this company really gives any care towards their clients. I'm not sure if the people working here actually care about doing there job in a proper manner. I have submitted a claim from which I made a cash payment after which I claimed from my medical saving.today I followed this up via the app only to see that who ever dealt with the claim was so lazy to thourly look at the claim that I actually sent the tax invoice with the cash receipt stating that I already paid and that I was to be reimbursed. Is this so hard to understand ???? I mean really this will delay the whole reimbur*****t process. Discovery really is becoming worse than eskom. This is not the first time this has happened to me so disappointed in the level of service recieved once again