This company is the "lower your credit card rates" and they continually change their phones number to try and trick you into answering the call.  When you ask them to remove you from their calling list, they are rude and generally hang up on you.  Most recently when I made the request to remove my number from their calling list the person on the call kept demanding my age.  When I would give him that information he was quite belligerent with me.  So I had to hang up on him