they swiped more that i bought now they refuse to payme back

I WENT TO CHICKEN LICKEN PRETORIA NORTH ON THE 28TH OF DECEMBER 2018 I BOUGHT A MEAL ON THE DRIVE WAY AND I WAS HELPED BY A LADY CALLED ITUMELENG. I BOUGHT a meal for R 79.70 AND PAID WITH MY BANK CARD BUT SHE SWIPED 179.70 FROM MY CARD I DIDNT SEE IT EMMIDIATLY BUT NOTICED IT IN 2DAYS AND I PHONED THEM THE INVESTIGATED IT AND THEY TOLD ME THEY WILL REFUND BUT TILL TODAY I HAVE NOT HEARD ANYTHING FROM THEM, SO THIS MEANS THEY ARE USED TO THIS ROBBING PEOPLE THEIR MONEY. I WILL NEVER SET MY FOOT again in chicken licken ever. check you slip this people a ******