Burger King Took My Money but Didn’t Process My Order

On Friday I went to Burger King in Long Street. I made an order at the self-help kiosk, finished the order, and paid. The payment went through, but I received no slip from the card machine or a receipt for my order. I went to the till and spoke to one of the staff, explained my situation and what I ordered, and said they didn’t receive the order either. I showed the lady that assisted me the proof of payment on my banking app and Apple Pay. She told the rest of the staff, and they said the order didn’t show up on their side either. I asked her what the next steps are because I want my money back, I was told “it will bounce back into your account, I promise”. I asked what will happen if it doesn’t and she said I could return to the store. It is Monday and nothing came back into my account. I did not receive a note or anything from any of the staff members to return with. Highly disappointed.