MILK OFF BEFORE THE TIME

I HAVE SENT AN EMAIL TO FAIR CAPE COMPLAINTS LINE 24/01/16 TILL TODAY I HAVE NOT RECEIVED ANY FEEDBACK. I BOUGHT MILK FROM SHOPRITE BLUEDOWNS AND WITHIN 3 DAYS IT WENT OFF BUT THE DATE WHICH WAS NOT NOTED IT HAS NOT REACHED IT. I HAD TO THROW THAT AWAY BUT NOW AGAIN I BOUGHT ANOTHER ONE FROM FOOD *****S MARKET BRACKENFELL , IT WAS DATED 26/01/16 BUT WHEN I GOT HOME ON THE 24TH IT WAS OFF AS WELL. WHAT IS GOING ON WITH YOUR PRODUCT AS IT SEEMS LIKE IM WASTING MY MONEY