They called, I answered, nobody there. I saved them on my contact list under the name "Spam". So long as the phone numbers are different, you can save any number of callers by that same name. I currently have 18 "spam" callers saved to my contact list. Yes, that's kind of a pain in the neck, but in the long run, it's worth the effort. I mean, so long as the mythical "Do Not Call" list does not work, I figured I might as well have a personal "Do Not Answer" list on my cell phone.
Solicitors from the Wishing Well foundation, an organization claiming to grant terminally ill children with last wishes. Initially said "no thank you" then spent a good 15-20 minutes on the phone messing with the caller because she would not take no for an answer. Good times.