Debited twice for one transaction

Hi, on 23 January 2015 I swiped my cheque card at Spur for R210. I was told to swipe again as it didn't go through. It went through twice. I have since the beginning of February 15 disputed the double billing with call centre and online secure messages. My money has still not been returned after calling over and over again. Standard bank is useless and I need help to get my money back.