Contaminated food. What to do next?

I bought some food from a grocery store last week. I ate some. While I was in the process of making my wifes lunch for work I found some sort of animal feces in the bottom of the bag. I didn't get sick from what I ate, but the company that produced this product has endangered myself, my wife, my unborn child and my room mate. They sent me some coupons when I filed the report, but I feel I am owed a little more than a few coupons for a product that I am never going to buy again.

I have filed reports with the FDA and the store I bought it at. How should I proceed from here? Any advice would be helpful. I have never had a situation like this before.