COMPLAIN!!! That's terrible!!! You need to let them know how you were treated and what a waste of money the class was. I would tell them that they should NOT allow her to teach classes for them. Maybe it will save some unsuspecting students from ending up in the same plight as you. I'm amazed you sat there and allowed her to treat you that way. I would've gotten up, asked to speak to the management and then demanded my money back!