It doesn't sound legal, and it sure wouldn't fly where I'm from. You need a lawyer for this if you want to push back at all, so get your advice from them. Look

It doesn't sound legal, and it sure wouldn't fly where I'm from. You need a lawyer for this if you want to push back at all, so get your advice from them. Look for a lawyer that gives free consultation (which is a good lot of them). That way you don't spend money to find out they can't do anything for you.