Get calls from this number on a regular basis. When I answer the phone no one answers back. Tried calling number back and it just keeps ringing.

I got a call from this number at 9:30 pm tonight (2009-08-28).  The person asked for an incorrect name and then hung up.  I called the number back and it just kept ringing - no answering machine.  I will be writing this one down.

A young man phoned from this number, indicating that he represented a window company.  I was unable to comprehend what service he was providing because of his hurried speech.  He spoke in poor English, not as someone from another country, rather like someone who needed to spend more time working on their English homework!
This individual skipped his entire opening to ask if I was going to be home tomorrow.  If I was to be home he would "bump me up 29%; I'm assuming the cost of the service.  At any rate I declined and have since become very suspicious.
The call took place on 06/15/2009.  Worth noting is that I'm fairvdistance from this phone number.