Vitality leads to 'heart attack'

Discovery Vitality, I am so disappointed that I have to type this, but I have tried phoning you and messaging you on multiple occasions to no avail. I joined Discovery Vitality at the end of June, and to be completely honest I wish I had not. Why, you may ask? Well in the last month and a bit, I have had such poor service. My vitality points cannot be calculated because no information can be retrieved on my app or added manually on your side because there is a fault. This fault has now occurred SIX times- The first four times took multiple phone calls, face book messages and many days to rectify. (Asking for a manager gets one absolutely nowhere) So now it is broken for the fifth time, I am tried to send your private messages but they are just ignored. I would like to know- So out of utter frustration and desperation I mention canceling my account. So how do you react.. You say some one will contact me. I don't think i should leave because you can't fix this problem.