Bad customers are no excuse for bad service. We've all experienced difficult customers and people who cannot be pleased no matter what we do. And even though it could feel justified to provide worse service as I result, that's wrong. I've seen people do it -- give the customer less than usual because of a rude remark, or take longer than necessary on a task because of a condescending attitude -- but in service to others we must be better than that. Customer service excellence means constant, attentive, respectful helpfulness. Nothing less. And who knows -- we could always end up turning that bad customer into a great customer. -- doug smith