Rotten Meat at Checkers

I have bought vacuum packed Pork Steaks from Checkers many times and this is the fourth time that the meat is rotten when I open the packaging. I have to through away R200 every time. If this was a once off situation I would have understood but four times? When I took the meat back yesterday they refused to give me my money back even though I supp**** all the packaging because I no longer had my receipt. Very disappointed in the quality of the meat I spend my hard earned money on and even more so in the response I got when returning the meat to them.