Exceptionally rude and bad service

I'm a loyal customer of Discovery possessing a lot of their products like the credit card, car insurance, (used to be on their medical aid until I changed jobs) and a life policy. I joined Discovery Vitality to be able to benefit from the shoe booster benefit in December 2017. To date, I have not received a SINGLE cent for meeting my goals through the cash back reward they advertised the benefit on. I've called EVERY SECOND DAY since January 2018 and I'm told by EVERY SINGLE consultant "sir, I promise you I will personally call you back to give you feed back". They've literally ****** my money at this point. I would not have bought the shoes had it not been for the false advertising!!!