My cell phone only ran once. The scammer wants you to call back for curiosity so it rang once. The auto message you will hear when you call back - congratulations, you win a $100 walmart gift card and press 1 to connect a representative. I pressed 1 and heard a guy with severe foreign accent. Of course the guy want to get my credit card or bank account. I kept silent and he hang up. Please remember to use "star" + 67 before you dial that 415 number to hide your own caller ID.