Worms and Webs

I bought a 10kg Ace Maize yesterday at Witpoortjie Shoprite. Upon opening it had live worms and webs inside. The maize is fluffy and soft as though it's mixed with flour. I check the expiry date and it's dated 07/07/2028. This pose a serious health hazard and can make a person sick. It's soo disappointing and frustrating to have to find such things I something that we consume on a day to day basis.