From what you have described, I am inclined to believe your food was prepared/served improperly.

You should have let them know immediately that your meal was uncooked. If you son's meal was cold; again, that should have been mentioned immediately. Crab legs aren't cheap either.

Unfortunately, you have to be a squeaky wheel sometimes. If you really couldn't wait for the meal to be prepared again, you should bring that to their attention. They probably would not charge you. I can't imagine if you didn't finish the meal they would charge you and then offer a coupon for your next visit. If I were the manager, I would do the former.

Ultimately, I can't understand why you would you pay for this meal.