Pathetic process

I placed an order on the KFC app today around lunch time.

I received a message that stated "Sorry! We are unable to process your order Nina127121. We have initiated a refund request against your Payment"

I called the KFC call centre on ***and spoke to a consultant who advised that my refund would take 24 hours to be processed.

I am not happy with this. I used monies to buy lunch for my daughter, only to establish that KFC had a system issue and could not process my order. Shouldnt the monies be reversed immediately???