Dining rewards

It is now nine and a half months since Discovery's 'system' (read: the human responsible) failed to recognise and pay back a cash reward for Healthy Dining on 28 January. Correspondence on this matter has continued throughout the year and despite an email stating that I would receive double what is owed back in Miles (to compensate, I suppose), nothing has happened. Indeed, today I received an email from Mr Thabang Mkwa**** indicating that I has not any knowledge of this matter, which has been dragging on for all this time. People should be very careful before trusting this company to live up to the client service they promise.