KFC don't keep their promise to me

On Friday 26 March 2022 I placed an order on my app to be delivered by the Phillip nell Park KFC, when I placed the order, I had a problem with the internet, somehow the transaction did not register on the app and I did not received a order number, but my payment of R160. 70 from FNB went through. I contacted KFC at Phillip nell Park and they told me that there where no record of my order on their system. So they told me to contact the head office client services to arrange for a refund. I contacted them and told them my problem and were told to send proof of payment and a copy of the sms I received. They gave me a case number CAS-957089-D0N2D8. I was promised that the refund will be paid in 24 hours and after calling them day after day the refund is not been done as yet If somebody promise u something I believe that they must keep their word So now I don't trust KFC because they broken their promise to me and I will never buy anything from them.