I don't answer numbers I don't know but this number calls me frequently without leaving a voicemail!

I get a call from this number almost every day ----- they never say a word.

this number calls a few times a day and no message is left.  Twice I answered
and no one was answering.  Very annoying is right.

This number has been calling everyday for two weeks without leaving a message.  I don't answer calls I don't know, so I never pick up.  Very annoying all the same.

Dnot know caller!