Anyone ever find anything in the pizzas?

Yesterday while I was eating one, I bit into this really hard piece. I spit it out and there's a piece of metal in my piece of pizza?! It is VERY small. Like pellet sized, but the shape of a nut (the tool/fastener thing). Gonna give them a call in the morning. Maybe I'll get a free pizza free of metal? Yay! I want to mail to to them, "I thought you would like this back?".