a woman calling asking for the owner of they company by his first name.  Said she was with Dunn & Bradstreet Credibility Corp.  I asked her if she was with a division of Dun & Bradstreet and trying to sell us something.  She wouldn't answer the question she just repeated the company name she was calling from.  Again I asked her if she was trying to sell something.  She wouldn't answer the question.  We only had to join D & B to get a number to complete a form to be paid by one of our large clients.  I am going to go back into their system and change our information all by 1 number in the phone number and in the email address so these people cannot telemarket to us