Beware - you may be over paying due to Discovery incompetence

Signed up for Gym booster and Discovery Bank in order to receive 100% cash back. Through Discovery and their partner (Virgin) failing in process, they did not update their records and instead I remained on the 75% gym fee discount with no cash back for the 25% difference. My fault is that I didn't fully understand the benefit and only queried to years later, but I did blindly assume Discovery would have implemented correctly. I am now out of pocket over R5,000 for Discovery's error in process and they are refusing to compensate for not implementing the benefit correctly. Even after I brought to their attention, they still haven't fixed the problem going forward so that I receive the correct benefit going forward. Speaking to people at Vitality, there is zero ownership or accountability and I've moved from a very happy Discovery client to a very unhappy and aggreived client, now taking step to move away from Discovery. The promote healthy living for benefits and all I'm experiencing is unhealthy stress for money ****** from me with now acknowledgment of fault or redress. My responsibility is to sign up for products but Discovery's responsibility should be to execute and deliver correctly.