Mulfcution of self service machine

I am so disappointed in your self service machine, today I went to Pedros in Centurion. I tried to order on the self service machine twice but the transaction was declined however the amount was deducted twice R65.99. I left without even going to the cashier to check if they received the order. I am sure the 2 transactions are a minute or 2 apart, can you please assist with a refund as I never received the food. I will be in the branch 9:00 o'clock tomorrow