Shocking product quality

I purchased a 72 pack of your Nutrific cereal. I regularly buy the single pack of Nutrific and it's my daily go to cereal. The first thing I noticed when I opened one of packs in the bulk pack, the biscuits looks different and was very grainy versus the biscuits in the single pack. The taste and consistency was also different, and after finishing a bowl of the cereal, I had stomach cramps. I went to another supermarket, purchased a single pack and confirmed that there a huge difference between the bulk pack versus the single pack! The quality of this product is shocking! I will report this the local Health department and will suggest they inspect your facility as there is clearly no quality control, or the consumer are being mislead and intentionally sold a inferior product when in buying bulk. Misleading the consumer