(360) 215-7372. With the name of "Unavailable" --- left no VM. I blocked ion my VoIP system.

Called did not leave a message

I received a call this morning very early, the caller id showed unknown caller, no message was left.

This number has been calling for months.  No one answers.  This is a huge problem.

Call back gets,"Thank you for calling back.  If you are not interested in receiving any of our promotions and would like to be placed on our do-not-call list, please press one now."  It repeats this message over and over.  Obviously no human to speak to.  Most likely a robo call telemarketer.  Good number to block.