Paying for Discovery’s mistakes!

I am utterly disappointed at the service I have just received from Discovery. I have been on Diamond status for several years and receive several financial benefits including but not limited to the life insurance, and other packages I have with them. I spoke to them last week, about potentially adding my mother to my medical aid and asked them to confirm whether my status would be downgraded, they categorically told me they would be not downgrade of my status and I would retain it until end of 2022 on a recorded phone line. Following the conclusion and verification of my policy; they changed their story and now want to downgrade me to silver in 2022. Given the various financial implications that are tied to the benefits they give me; including a cellphone contractural, over and above the gym benefits, life insurance rebates, discovery bank benefits and cash backs, this will seriously disadvantage me. They have indicated that there is nothing they do can about the misinformation and offered me a R250 voucher… My total medical aid costs are approximately R13500 (nevermind the cost of my other packages); so this honestly a complete joke!