Extremely disgusted

I bought a cooked Eisben at Food *****s market Gateway. When I got gome and I was cutting it into slices, preparing to indulge to my surprise I see worms inside the Eisben. Don't you have a shelve life for your cooked food? Imagine if I did not cut it up, so it means I could have eaten worms? I am never buying anything from your store, it's a serious health risk and I will tell everyone I know about this. I can not believe this.