I received a call today from this number (caller id: Special Discount).  When I answered the phone, it was dead air then they hung up.  I called the number back and they stated, "This is call center wanting to speak with someone regarding a free publication you are currently receiving.  We are working in accordance with the phone laws, please leave your name & number if you would like to be removed from our call lists".  Of course, I gave them the number I wanted remove, let's see if they call back again.