Discovery Healthy Food Cashbacks

For 2 consecutive months Discovery have not awarded my rightful Healthy Food cashbacks. For the month of July spend the shortfall was 6088 Vitality Money miles (a cash value to me of R700). After umpteen calls, hours of cell phone airtime and many ignored emails the problem has still not been properly addressed. Furthermore my new month of cashbacks has just come in and this time there is a shortfall on both the Vitality Money and Vitality Health cashbacks. The problem is clearly not a once off. It is virtually impossible to reach a cashback specialist and the service from that team has been a mess. I was contacted by a cashback specialist about 3 weeks ago but this contact has since vanished and does not return calls or respond to emails. I pay a premium monthly fee to be a Black Full Suite account holder and do so because of the associated Healthy Food cashbacks benefit. In addition I put in effort to maintain Diamond status on both Vitality Health and Money. In return I am contractually due my rightful cashbacks