This restaurant was recommended by a friend who bo...

This restaurant was recommended by a friend who boasted the service and dishes served.
The service was good and the waitress nice and fast.
As for what I ordered Pork Burger, it was fine until I found a piece of metal inside. After checking my fillings (it's something that happens to lose one) I realize that it comes from what I ordered. The waitress is notified, leaves with the piece of metal and I hear more about nothing.
In my opinion he would have one of the owners come to see me to at least apologize if in the restaurant policy it does not refund the price of the meal or offers any compensation.
I find this really disappointing and it is guaranteed that I will not recommend this restaurant to other people or point me out to try another one of their dish.