This number has been calling me almost every day for weeks.  I finally called it to see who was calling and NOT leaving messages.  It was some female who answers the phone, "Hello?"  

Bottom line, she is a bottom feeder with a list of people who have time shares and she is trying to get you to sell or rent your timeshare.  

I told her to remove my number from her list.  We'll see if that works.

update:  it has been more than 9 months and no more calls from her.  :)