Discovery moving credit card to Discovery Bank without permission

So without getting my permission Discovery has chosen to move my credit card from FNB to the Discovery Banking App. I really don't want to do this. In my experience dealing with Discovery over the last few years has been a disaster. And their health app has been abysmal. And don't get me started about Discovery Insure. I think I'm going to have to close my account - although from all the reviews I've read Discovery make this almost impossible to do. Well done Discovery.