****ed customer

So today I had a bad experience from KFC GHANDI SQUARE AND THEIR DELIVERY CENTRE. Yesterday I placed an order for deliver and I received my order but today I placed an order and I didn't receive it. I called their delivery service and they gave me a voucher to purchase, when I got to KFC branch the voucher was invalid. I called again the delivery service and they took the voucher number and I held on the phone for more than 45mins. I am really upset and disappointed in such service.