you have to look at what is actually going on and not how they are making you feel. look at the facts. they are exploiting you. they are making you work for free. they are bullying you. if they fire you, they are dong so illegally and that is something you can report as well. it has nothing to do with your job performance. nothing to do with you. you are standing up for yourself. you are refusing to be bullied. right now you are not feeling good about yourself for being bullied into the meeting either. wouldn't you feel prouder of yourself for standing up to them? You did the right thing. they are in the wrong. remember that. it isn't about you. take care.