[roedog88]

Working in technical support my colleagues and I all knew who were good customers, and who were bad customers. Our manager knew too. He would back us up with raises and options. Making unhappy customers happy is not an easy job (especially given our bug list at the time).

Years later, I still remember one who called almost once a week with a new issue he had dug up. Admitting he was right and promising to fix the bugs did not make him happy, or make him go away. We all had a theory that he was calling so often because he was lonely and wanted someone to talk with.

Taking a longer view, I think being a nasty customer is it's own punishment. These people are miserable or sad, and lording over a service or hospitality worker gives them only a pyrrhic victory. The server or tech support moves on with their life. But the asshole is still an asshole.