It’s a little difficult to answer your question without knowing more information about the situation and what’s occurred up to this point.  The best advice I can give you is to speak with the teacher(s) first in a positive manner about your concerns.  By positive I mean to avoid approaching anyone while angry, upset or confrontational.  Try to set up a time and approach your meeting in a calm and collected manner, perhaps even writing items of concern down ahead of time so that you can stay focused.  You may even want to have someone with you as support.  Someone who is there to “hold your hand” so to speak and give you strength to say what you need to say.  If you find that your concerns are not properly addressed after this meeting, then perhaps you may need to get administration involved.  As well, document your encounter as well as any previous instances which you felt were abusive.  Hope this is of some help.