Overcharged and no refund

My brother was leaving to Free State for our auntie's funeral, i went to CB Stores at Jabulani mall , Soweto to buy him a travelling bag. \Zanele"the consultant swiped the card and she said the speed point is off line but she did no give me the receipt showing that it was off line or declined. The amount of R 119.95 was debited from the card not knowing"