Vitality Rewards and cashback do not work!!

I have been going back and forth with Discovery Vitality for over 2 months now whereby they cannot understand my query and provide the necessary assistance. I have explained my problem numerous times to be told the same standard reply. It is extremely frustrating dealing with the vitality department! I have not been receiving my cashback on grocery spend and I was unable to load my details on the app. I sent the form through to the consultant and still have not received my back dated cash backs. In addition to this, my exercise workout data has not been closing my active reward goals, therefore I have been paying in full for my apple watch where I had made 3/4 goals in a month. I'm appalled by their poor service and ability to understand a customer query and provide proper assistance.