Having to Pay Twice for One Transaction - Feeling ******

What a shocking customer experience at Builders Express EL on Friday 16 September 2022 and today. I paid by card and the payment was authorised on their card machine after putting my pin in, but the connection with the cashier's till computer was lost due the start of load shedding. The computer rebooted but didn't show the payment. I showed them the payment notification from my bank as well as the payment on my bank app. Yet they insisted that I had to make another payment. Both payments have been banked by the card machine on Saturday 17 September 2022 and yet the store won't or "can't" process a refund for the double payment. I live out of town and only after coming back into town today was I told that I have to send my bank statement to them before a refund can be processed. I feel like I've been ******. I had to pay twice but I can't be refunded today? - I know a refund can be processed on the card machine to the card. Is this how you treat your customers? I won't be back for more of this shocking treatment. Load shedding isn't new and you should ensure your customers don't have to suffer for this and have to double pay & at least do a refund as soon as proof of double payment is shown to you.👎👎👎