* https://www.bloomberg.com/news/articles/2014-08-05/mercedes-... * http://www.bmwblog.com/2014/12/22/perfect-car-door-sound-mad... * http://mediatum.ub.tum.de/doc/1138344/369710.pdf * http://emea.nttdata.com/blog/en/its-all-about-sound-how-car-... * https://hal.archives-ouvertes.fr/hal-00849046/document
So I ask them to fill out a simple form: What happened? What did we do wrong? What is your desired resolution?
Often by the second question, they begin to realize we did exactly what they wanted (and no I don't mean we did it in a smart aleck way) and that maybe they're being irrational. By the third question, they get a perspective check: "how would I do this?"
Or they don't... and then explain in detail what they didn't like. We then address the complaint to the satisfaction of the customer.
I only use this in specific situations, but it's very effective.
http://ground-glass.com/the-one-thing-you-must-do-when-reply...