Tired of Phoning

I have been struggling with discovery now for 2 months to pay off a claim. I moved plans within Discovery had to pay my chronic medication out of pocked for 2 months. Further more I have been a member of Discovery on the classic priority plan for years. I have been on my chronic medication for more or less 6 years. There were many issues with regards to getting my chronic medication approved. Finally this was done. Now comes the time to claim back those purchases and I have been struggling with this now from Feb 2016. I have been promises millions of times that they will get back to me and such. I have probably phoned out about R300 to try and sort this out. I have neither received any feedback nor have I seen a cent of the money that I have claimed for. There are 3 claims: 2 for my chronic medications for Jan 2016 - Feb 2016 and one we had to special claim from our Discovery savings. All totalling almost R1 000. I have sent all supporting docs at least 10 times filled in forms and jumped through as many hoops as they wanted. I don't know what else to do.