Terrible Service From Discovery

I lodged a claim with Discovery concerning cash payment made for visiting the Dr. After back and forth with the claims department, I got very tired with their claims process. First they conveniently did not look at first attached invoice, I had to query it. Then they advised that they could not see the date which was clearly at the top of the form. Then the practice number was not valid? Each time they took a week or more to answer me. Why could they not have advised me from the start all that was needed. It comes across like Discovery was looking for every way out of paying the claim and in this instance I feel Discovery felt that if I just got tired of the way they were treating my claim I would just let the claim go. I lodged the claim in May 2018, I complained in June about the process and terrible service experience and received an email on the 26th of June 2018 from Tevin Naidoo advising me that in 2-3 days I will receive a response and then I would get contacted by management as per my request, up until now there has been no communication. My assumptions were confirmed, Discovery was just doing their level best to get me to drop the claim out of frustration. I am so astounded by the awful service received by Discovery I don't expect this from any company this is not TCF, currently I am wondering should I look for another medical aid provider. Discovery, this is terrible treatment of your client.