This is not true. They keep calling even if you never pick up your phone, which I do not. I even turned my ringer off so could not pick it up if I wanted to. I set my voicemail to pick up after 1 ring and my message is the recording that says "This number has been disconnected. Please hang up and dial again...." I found the sound clip on youtube and set it as my message. (people who I actually want to reach me call my cell phone - not this number) This works with most telemarketers except these damn childhood leukemia people who call me about 3 times every day.
"THE CHILDHOOD LEUKEMIA CENTER" is a fictitious name designed to sound like organizations that really do support the research and treatment of childhood leukemia.
The phone number 317-472-8016 is not associated with the legitimate organizations.
Give your personal information, whatever the caller wants, and you've been duped.