Worms inside the Acemaizemeal

I'm very disappointed in ace maize meal,I went to the Checkers hyper in 1snoop str Roodepoort this month on the 4th to buy maize meal as I didn't have any left ,fine as I got home opened it ,so I can start preparing it poured the ace maize meal into a dish before mixing it with bowling water in the pot guess what I got a shock of my life? it had white worms in it.next day I couldn't take it back as during the week I go to work so I call the ace direct customer service line it was busy ,so what should one do?