Same as Jane above, getting these calls every 1-3 days - it could be a robodialer with a telemarketer waiting in the wings ready to connect only if the phone is picked up. No messages are ever left.
This phone number has been calling me as well every 1-3 days for the past month. When I try to call back, an automated voice says that the call could not be completed and try again. It's pretty annoying!
Annoying as #$#@! Calls me about every 3-4 days. I never pick up because I never pick up calls where I don't know the number. If it's important, they will leave a messagem which these people never do. And if you call back, nothing on the other end. Idiots!