Refund policy and bad customer service

I’m very disappointed by Burger King and their management and I’m never buying from them again. I ordered in store there was an error on the machine and the order went through but we didn’t get an order number and the error said the money deducted will be returned shortly. But instead it didn’t and they said there’s nothing they could I just have to wait for the refund in 24 hours, mind you that was my last money and I was ordering for supper. I’m upset and extremely disappointed by their customer service and management because the fault was on their side but somehow me as the customer got affected and it makes me wonder if they treat all their customers in such a ****py way, I will not be leaving this I will definitely make sure my complaint reaches their head office because this is unacceptable, my work transport left me and I have to take a taxi at night home because of their back on forth.