Ahem… allow me to play devil’s advocate
The only thing that annoys me as much as the people described above is those who work for a company that take the “what’s your problem, it’s not my fault” line with paying customers in say delay situations, other cock ups etc.
The customer knows it is not personally your fault. He has, however, paid £x to your employer for a service. You work for organisation X, so damn well step up, apologise and take some responsibility (on behalf of your company, of course) for the inconvenience caused to said paying customer. I believe that is “customer service”. For an extreme example of how not to do it see London Underground workers.