I did a lot of customer service and the best way to deal with these people is to sound and look happy and be polite and smiling no matter what. it makes time with them go a lot faster and you waste less time per idiot..I find that treatment kills them more slowly from within because they see how no matter what they do to upset you it is not working and they are just wasting their lives and looking like idiots. Then after they leave they feel like the losers they are and become full of rage and go home and have a fight with their women/men and end up having a crappy day or week because of the way you made them feel. some of them end up killing themselves or beating their partners and going to jail and you read it in the newspaper and you feel like the world is becoming a better place :)