Ace Super Maize Meal Disappointment

Towards the end of April this year I bought 2.5kg Ace Super Maize Meal from Pick n Pay-George in the WC, when I opened my storage bucket to cook for my 5year old son I came across spider webs and worms, I had to throw it away. This was not my 1st time bad experience with the product, on a previous month I came across the spider wob like things but still used it, there were no worms. How many people are going to end up on hospital beds or even die of using this bad product? Do something before it's too late, the fact that I bought it and had a problem twoce means there is a problem with the product. My son recently had a terrible stomach problem, how will I know it was not due to this product?