Half empty tub

Bought ice cream from spar however I was aware that it couldn't be the store's problem. The tub was half empty. Only noticed when I got home. I initially thought it could've been because it was slightly melted but even then the tub felt really light. I didn't notice prior as I didn't think it would be necessary to feel the weight of an ice cream tub. Made me realize why it was on special at R54.99