they keep calling and leave no message.

Wanted to speak to VP of my company calling to update their files to receive a free trade publication.
I hung up on the lady.

We are getting about 4 calls a day from this number and all they is hang up.

I have caller ID, so I don't answer, but the constant calls are quite annoying!!

I started receiving calls from this number today to a state government office line. This unknown party is calling my line every few minutes. This prevents its use for legitimate state business and creates a major waste of time (and therefore, taxpayer $$$), even just to drop whatever I am working on to check the caller ID each time the phone rings.