I have been called 14 times today from this number. It has reached the point of harassment.  

Called several times a day even evening hours and does not leave any message.
Called back and refer you to an 800 number and it is about Branson vacation and very hard to get
your number out of the list. Very irritating.

four calls in 4 hours it is harassment

When answered, no one on other side.

This number has called us twice today. On the first call I answered the phone with our organization's name; the caller did not respond at all. On the second call I again answered with the name of our organization.The caller did not respond. I was in the middle of trying to say, "If you don't want to talk to us why do you call us?" when the caller disconnected.
It is extremely annoying to have your day disrupted and your concentration broken with calls such as this. I'll have to have my whistle handy again to blow into the phone when they call us again.