Error purchase

Hi yesterday we visited the place and we purchased drinks and the was an error about that went through, the amount was R27,000.00 and was supposed to be R270.00 and when we asked ownto reverse the money he refused. card holder is Mr Goody Tekane and the owner of Junxion lifestyle is Sbusiso his contact is ***. And the number of card holder its *** so can hello Peter assist the Goody Tekane to get his money back.