KFC Belhar online

I placed an order on the KFC app today the money was taken from my bank account however the payment went from my bank account. I call KFC Belhar spoke to Lorretta which I am assuming is the manager, the line drops no call back made, I drove to KFC Belhar explain what happened the Manager who is Loretta refuses to come to assist as I have spoken to her on the phone. Being advised that I need to come with my bank statement on Monday before 4pm to ensure that the money gets refunded back to me as they aren't able to give me the order that I placed as their books won't balance. I get that it's month end and they are busy however the customer service that I have received is POOR to say the least as there was no apology given for my inconvenience remember I had to drive petrol is not cheap at all! And the just want to brush me off like that? I work in customer service so I know the service that we need to give our customers apart from me wanting my money back I expect more I am not happy at all. Giving me an email address to send my bank statement to why would I trust you with my banking details if I showed it to them in store