Brewards card is a ****

I registered with Brewards lost the card and called customer service a lady by the name Mahlatsi was very helpful and helped me download the digital card which supposedly should work. I continued buying my groceries and earned R900 in rewards which I was to redeem on the 29th. I was one if the 1st customer at the store as I was there 6:25 in d morning..select d items I wanted however the digital card cud nit work as their system only has d option of inserting card and not scan the barcode. I called the customer service demanded to speak to the manager/team leader I was transferred to a guy by d name Lungelo whom in my opinion is very *********** and should not be in this position. He promise to resolve the matter and to call bek which he did not I had to follow up again and d consultant tried to assist she even asked me to go to the store and called when I was there to guide the cashier on how to use the app but unfortunately the system insist on shipping d card. Brewards of R900 were lost just like that in d process and Lungelo the manager still has not called with a way forward