Consumer rights violation with force

I went to buy liquor at Mos*** liquor market and bought a whiskey and Jagermiester when they scanned the bottle of Jagermiester ir was R114 then I asked to buy 3 more bottles jokingly making them aware that the bottle costs R200 at any other bottle store.That's when they went to call a guy in the office who identified himself as the owner.Hw grabbed the card and the bottle from me and reversed the payment reason being he'll change the price to R214.<br> <br> As I tried to explain to him that by law if the price is set and goods are paid for already he may only fix the error on the stock not paid in response he said you black people like taking advantage and not today that's when he instructed security to kick me out of the premises.<br> <br> Contact them on ***