Yeah, I ahd a simialr experience there a few years ago...my wife and I both found foreign objects in our food---she found a small pebble in her salad, and the waitress took it back to the kitchen, then returned with THE SAME SALAD - she had just added more dressing. You could see the spots where my wife had picked out the olives and crotons.
She did not attempt the salad further, but said nothing. Mistake.
As I was working my way through the entree, I found, I kid you not, a TOOTH. Actually, it was someone's crown, not a whole tooth. Not mine, I have no dental work of that nature. I showed it to the waitress, who comented that it was little fishy that BOTH of us had found foreign objects in our food.
We asked to speak to the manager, and the waitress refused, so I went to the hostess station and loudly asked to see the manager. That worthy made her way out shortly thereafter, and I explained the situation. She listened, then told me "I can't believe what you are saying. What do you want me to do?" I told her that, since she had to ask, nothing, we would simply pay the bill and be on our way.
Argh, it still makes my blod boil to think about it.
Rob