Called and asked for a household member who was not home.  Declined to leave a message or a return number.  When pressed, would only offer a first name (someone we do not know).  Whan calling the number back through caller ID, after a LONG pause we get a message stating that the Verizon Wireless number we are trying to reach is unable to be located.

Caller ID shows that they have called repeatedly but have never left a message.

Received a call from this number, they did not leave a voicemail.  When I called it back, there was no ring - it never went to any greeting, just dead air.  I thought it was an inbound call from my cell phone insurance company, The Signal.

I get several calls a week from this number and they never leave a maessage.

called 4x today-never left a voicemail msg

I've gotten several calls from this number and they never leave a message.  I got one as recent as yesterday, which prompted me to try to find out who was calling.