Vitality Healthgear cash back - non existent

Contacted Discovery Vitality to confirm that if I purchased a Garmin Fenix 5x online from Totalsports that I would qualify for the 25% cash back due to my Gold status - it was confirmed that I do provided my profile was loaded with my Vitality gear details. I too contacted Totalsports with the same question and it it too was confirmed by the Totasports consultant. I also requested that if payment was made on my wife's account as this was her 30th wedding gift to me - this too was confirmed by both Vitality and Totasports. She assisted me in loading my profile with me Vitality Gear card details. The Garmin Fenix 5x was purchased and delivered in September 2017 on invoice number CR ********** 099238 - todate Discovery Vitality has not honoured the cash back. I have on numerous occasions emailed them the online statement for the purchase - yet I they have not honoured the cash back. I have posted the complaint on their Facebook page but still no response to ensuring that I get my cash back The first email sent querying the reason for not getting the cashback was 04.10.2017 and teh reference number given to the query was # ********** 413 - the Vitality system number received was ********** 439. All the documentation was sent to confirm the purchase of the Garmin Fenix 5x