Double debited and refused a refund

I bought R117.30 worth of pies and cooldrink at King Pie near Game Stores in the Promenade Mitchell's Plain on 14 September 2018. My card was swiped but the card machine had no paper. The lady Nosiyanda told me that the sale never went through and that she will swipe again on another machine. I asked if she was sure, she rep**** yes. I checked my bank statement the next day and it confirmed that I was double debited. I went back to the store and some lady in charge gave attitude and said their tills balanced. She gave me some number to call the store the next day. Nobody at the shop was willing to assist.

I have a receipt for the purchase and the amount was never refunded on my bank statement. Bunch of ******! Will never buy there again!