Pathetic KFC *****ing money by not refunding and no response to numerous emails

Dissappointing service . *** KFC Customer Care Case CAS-***-L8F2X2 has been logged YUM:*** Placed an order on the app on Friday ***2. Order placed on app, and my account was debited .I then checked on the order and could not find it .Called the customer care who said there was nothing they could do as it was a tech error. Was given email to escalate . This was all done on the 28/10 . 5 email and 2 calls , later I have not received a refund , nor acknowledgement of my escalated query. In my last call I was advised it would take a max 15 days to refund . It is now the 16th November and no refund . Also nobody to escalate to , no legal department . This is like *****ing money from people and ignoring them. All I have is a reference . I have even posted this on twitter with no response from them.