I know! When I was working in Holland and Barett, Jules would have gone mad if anyone was actually rude to customers, and with what H&B sell, you're forever having to help and advice.
at Christmas and stuff when its cold, and dull and dark when you get up and you spend the day light hours working you can't always be bothered with the customer who is asking you questions and when you answer they act like they know better or disagree, I was thinking the whole time "well, if you know exactly what you want, and everything about it then why are you asking me?" but I was never rude to them, sometimes you have to be sort of abrupt or firm.