No response and no service

I have been trying to get a hold of Discovery call Centre since the 21 October 2021 and have either been told that they will call me back with feedback and never did or were trying to transfer to to someone else while making me hold on for half an hour and then cutting me off. I am on chronic warfarin and need to have an INR test done every 2 to 3 weeks and all I am asking is that Discovery pays for all of them and and now that my MSA is finished for the year that they back pay the amounts they haven't paid Lancet because this was supposed to come out of my chronic plan, not my MSA. I also want to know why I can not receive email from Discovery? I believe that it is due to the POPI act but I also called them to ask about that and again I was was cut off while I was being transferred. I have been with Discovery for most of my life and I must say this is by far the worst service I have ever received from them. I am shocked and horrified its as if no one works there any more.