Nandos- the worst and most disgusting customer care ever

Nando's honestly has the worst customer service and call centre agents.. I have now not only called the call centre to resolve my issue of refunding my bank account after they deducted money from my account more than a week ago with the order not going through, and them assuring me it will automatically be refunded within 24 hours since the order didn't go through on the App, I have been given the run around, told my details will be emailed to the manager of the store in question, only to have me call the store manager 24 hours later after no contact, email sent as per managers request, yet still no response from Nandos on how to not only resolve my refund issue, I then contacted them on Facebook on their page as well as privately in their messenger and response I got was that they informed their care team and I will be contacted shortly. That was 2 nights ago, and still no response from Nandos. Not a phone call, email, nothing. At this point, not only am I out of pocket with they money they debited from me, but the R100's of Rands wasted on purchasing airtime to call their call centre with no help.. Honestly the worst and most disappointing experience from a food establishment using their app, as I have experienced something similar with another app, and it was resolved within minutes. It's now been 13 days since the incident, and I have not had 1 representative from Nandos contact me via any medium to resolve this issue. I find this unbelievably atrocious from a company to be treating their patrons in this manner... And because of this incident, it has honestly soured me towards nandos as with technology errors can occur... But its been the after service in resolving this incident that is truly shocking and disappointing. I am now here on Hello Peter in hope that somehow, this will get a nandos attention so the issue can be resolved and I can be reimbursed and compensated for not only my order, but my time, my airtime and the inconvenience of this entire debacle.. Praying for a response