How can I stop getting spam calls?

Episode 1309 (1:09:38)

John from California

John got a call from someone this morning and the caller ID was showing it coming from his own number. Leo says it's really easy to spoof caller ID to lure someone to answer the phone. Leo likes to use Google Voice as his main phone number, since it will reject a call if it's not in his contact list. John can put his number on the government's Do Not Call List, but most of these are from out of the country and they aren't subject to that law. True Caller and NoMo Robo are other options.