Poor service provider

I'm trying to change my medical scheme with discovery to keycare plus hence I'm on retirement and my current premium is abit high looking at something cheaper I've send all the required documentation hence if I dont do a follow up I dont hear anything from them I've tried calling numerous time but cant solve anything over the phone cause they keep on transferring me to different departments and I have to hold on call for a long time sometimes the call just cut after holding on for more then 10 minutes and its causing me airtime I'm totally ungrateful for their service as a loyal customer over the year please I need help in solving my problem in changing my current plan to a cheaper most affordable plan Mr R Burrell ***