A new month and a new spam number to my phone.  CID:  Out of Area.  Number: 408-879-0227.  I don't want these spammers to know my number gets a live voice; so, I never answer AND I never let it go to voice mail (because it's off).  Number is being blocked.  I don't get too many repeat calls when I pick up the number on the first ring and immediately hang up.  Try it out, you may receive fewer repeat calls from the same number.