One of life's great skills is to anticipate what people intend to do with information you give them that doesn't benefit you and to instead give them information that furthers your goals. Usually I use this to preemptively cut off sales pitches, so if I'm calling to Internet service or something I know they're going to ask why to try and waste my time with special offers to keep me, so I tell them I'm canceling because I am moving to Fiji because I know they have no service they can sell me there. Or if I don't want the extended service on an appliance I just tell them I'm replacing a dead unit in a condo I'm selling so I don't care if the new one dies it in a year with no warranty because it isn't my problem.