Agreed, the other day I found a piece of plastic in my food and all I did was warn the staff to check if something in the kitchen was broken so they could make sure that more bits didn't fall in other people's food. Working with food myself I understand that occasionally these things happen and people make mistakes. It's not like I choked on it so why make a huge deal?

They really just want a free meal.

And it could have been HER hair. It likely wasn't if she made such a big deal over it, but I know my hair gets everywhere, especially in my food. (and other peoples... whoops) It shouldn't really be that big of a deal if a hair gets in your food. Pluck it out. If it's a big deal for you then get rid of the part the hair touched. It won't kill you.

You don't know how hygienic this person is. They might have lice or something. If there's hair in the food, remake the dish.

#10 is right. People pull stunts like this all the time to try and get free stuff. It's disgusting. I'm more than happy not to have the business of people like that.

I agree remake the dish, but as the customer you have no right to lose your shit or get a free meal for it. Honestly, be a decent person and quietly address the issue with the staff. Either that or go somewhere else. Trust me, after working 10 years in restaurants, we couldn't care one iota less about losing one customer.