Store bought frozen coconut milk

you can keep the coconut milk for 3 more days and that's the maximum after this time you find that it begins to coagulate and that smells fowl. i bought coconut milk for a prawn recipe for valentines day http://www.mariellasmenu.com.ng/2016/02/tiger-prawns-in-coconut-milk-valentines.html and i had some left over, , even though it was in the freezer, it had gone bad