KFC App - a total disappointment

KFC has been advertising about the free delivery through their spp. I thought i would give it a try. On Friday 15/10/2021 I placed an order via the app for delivery. The money was debited from my bank account, however on the app there was an error and a message popped up indicating that the refund has been initated. I immediatey contacted the custome care and was advised that the refund will be paid out within 24 hours. If not I must e-mail my bank statement and details to custome care. 24 hours later - no refund. On Monday I e-mailed customer care providing all details including my mobile number and bank statement. On Tuesday I receive an e-mail from customer care requesting order number and mobile number amongst other things. This was provided immediately. Yesterday afternoon I get another e-mail from KFC providing the customer care consultant dealing with the query and again she requested my mobile number. Once agsin this morning at 06:04am I provided my mobile number. I contacted the customer care telephonically and was advised that the person dealing with my query was working from home. Once agin I provided my order number and was now advised that the refund will be processed between 2 to 4 days. What a total inconvenience - the money was taken immediately, the customer care agent stated 24 hours for refund and now 6 days later I must wait another 2 - 4 days. This is the worst service ever. KFC keeps requesting the same information over and over again - it would seem to be a delay tactic. I definitely would not be ordering via the app again and based on my experience I don't recommend anyone else to use the app as well.