Expected a call from the bay area, so I picked-up -- silence as if connection not complete; I dared not give my voice to this likely robo, called the number back, immediately got a non self-identifying voice mail prompt which I again, dared not give my voice.
Got a call from 408 479 4931. I did not answer andwno message was left. Called twice in one day, one after the other. I called the number back and received an announcement the subscriber was not avialable and leave a message (I did not).