In case you don't want to do it yourself, some good creative New Yorkers will do it for you. Check it out by playing this mp3. Or call the line yourself: (212) 479-7990. This is what you'll hear: "Welcome to the New York City Rejection Line. Unfortunately, the person who gave you this number does not want to talk to you or speak to you again. We would like to take this opportunity to officially reject you. If you want to hear from our comfort specialist, press 1. If you want to hear a sad poem written by a kindred spirit, press 2." Maybe there should be a literary equivalent?
p.s. No cancer...phew.