Shall i quit my job in desperation? and what to do about the evil deputy?? HELP!?

You need to quit, don't worry about getting a great job right now. Just get any kind - part time, cashier, stocker, whatever for the time being until you find the right one. You should not be crying on the way to work - work isn't supposed to be like that. You are hurting yourself going in everyday and stressing yourself out like that. Take care of yourself and quit.