I was also thinking that aside from my admittedly idealistic post about wanting everyone to be happy, that the customer is also a part of the experience. Sometimes we as customers don't stop to see through the noise and haste of our days to see that our actions as a customer also affect our experience.
If we are pushy and grumpy - hey, everyone has a bad day - the person dealing with us is going to raise their hackles and go on the defense. Even if they are trying to do all they can to serve you as their customer, you might not be satisfied.
My suggestion, for both the customer and the person serving them, is to stop for a moment and think about the other person. Here's a great example of WHAT to do...
Seth Godin wrote a book called The Dip, and has since released it on iTunes, but there are apparently problems with the download. He could have done nothing, and continue to collect money, but instead, he posted the following on his blog:
If you bought The Dip from iTunes and are having trouble making it play on your iPod, please drop me a line. Put "iPod" in the subject line. Apple is working to fix a glitch, and I'll email you when I'm alerted that it's been fixed. If you've been thinking of buying the audio version with the intent of playing it on your iPod, please wait a bit. Thanks. And I apologize for the hassle.
Not only is he offering to personally contact people when this glitch is fixed, but he has also asked people NOT to buy the audio version just yet to save them from a potentially annoying buying experience.