I received 3 calls from this number since August 9, 2011. I finally called it back and a male answered, and said "hello...hello....?" like he couldn't hear me speaking. I tried saying I had missed calls from this line, but all they kept saying was "hello? hello?". I hung up.
Keeps calling, leaves no message. Called back, reached a voice mail that included instructions for getting off the calling list. Despite asking not to be called, I still get calls from the number.