The meat was not fresh after a long weekend

I once bought the meat at shoprite in Lakeside mall. The next day when i cook one of the meat it was a beef sausage ithad a bad smell and i couldnt know what to do cause i was far from lakeside i didnt have petrol to return to the supermarket.The other day it was a chicken it changed colour into green and I had to throw it away in the bin. I was so dissapointed i trusted Lakesdie shoprite.