INDUNA MAIZE MEAL ROTTERN AND HAD WERMS

I BOUGHT INDUNA MAIZE MEAL AT PICK N PAY WOODMEAD AND THE EXPIRY DATE WAS NOVEMBER 2023, INSIDE THE MAIZE MEAL THERE WAS WERMS AND IT SHOWS THAT ITS EXPIRED. WHY DO THEY SELL SUCH FOR PEOPLE ITS RISKY FOR OUR HEALTH AND WE BOUGHT IT FOR R124,99. WHAT A BIG WERMS I COULDNT BELIEVE MY EYES.