Faulty products

I have had to return a product to the store again this weekend due to the product having gone bad. This time the product did not go past the expiry date as yet so I cannot blame the store for this. I have bought viennas and bacon from the store, which were both off and past the expire date. I have bought fresh cream from there twice and milk that was sour. Unfortunately, I was never in a position to return the other items. I sometimes see a few delivery trucks standing in the back of the store, with products in the sun. This is not something the store can sort out but surely Suppliers can make a plan to avoid products to be exposed to the direct sunlight for a long period of time.