163.  Dealing with a customer who is trying to intimidate you into giving him or her a discount 
164.  Dealing with a customer who is too impatient to wait for his/her turn and repeatedly sighs, taps his/her fingers, or tells you to hurry up 
165.  Dealing with a customer who makes unreasonable demands or asks for special treatment 
166.  Dealing with a customer who is argumentative and causes a scene 
167.  Being yelled at, insulted, or otherwise verbally abused by a customer