Old meat disgusting

I was in checkers okovango cape town.....and bought ribs at the butcher...when I got home u found the meat at the bottom to be slimy and green....what a waste of my time and money to drive all the way from Tha checkers.to mitchells.plain to have a family braai and to be so disappointed...I am disgusted by the smell in my house and unfortunately have to bare with it so that I can take.it.back to the store...a waste of.time money and petrol and most of all disappointed on my daughter.b.day....