Caller identified as being from General Electric then proceeded to ask more and more private questions about our home security system.  Caller sounded Jamaican and offered "free services" with a GE security system if I would answer her questions.  I asked my usual- "could you please send this to me in writing" line to get off the phone and she balked stating that she would not be able to answer my questions if I did not have her on the phone.  I told her I was not comfortable sharing details of our home security with a stranger and she hung up.