I did not receive my refund as promised

I made an order of food on the 11th of December 2019, the order was for KFC 3 streetwise 2(1 with pap and 2 with chips) The delivery came with missing order and immediately I cancelled the order and ask for refund. I was promised a refund of R70.70c as I am writing this review today Uber-Eats hasn't refunded me, When I contact them again on the 18th December I was told I do not qualify for the refund its already late. How come I do not qualify for the refund anymore while I have reported the matter right away.