Get calls from this line all the time. No one on line when you pick up. Call back and get a msg that the extension is not available.

They keep calling asking for a James Anderson. We have told them numerous times that there is noone by the name here and the same gentleman keeps telling me yes there is and keeps calling back. I need to know who these people are to file a complaint with our attorney. When I call the number back it says the extension is not available. This is ridiculous!!

If you don't want to leave a message, or answer a returned call, QUIT CALLING

Yes I got the same thing as the other commenters.  I won't answer it if they call again.

it must be a call centre if it wont let you call the phone number back, like a call centre that can only make outgoing calls. they keep calling me but i always miss the call, if a call centre calls you and you dont want them to, you can ask them to put you on their dnc (do not call) list and after 30 days if they do call back it is actually illegal! i used to work in a call centre thats how i know this so just do that!