This is a company that buys timeshares.  So if you ever owned one (whether you still own it or not), they are calling you to try to buy your timeshare.  I called them back myself, and told them I don't own a timeshare, and asked that they take my number out of their dialer.  The lady I spoke with was very nice, and confirmed my phone number, and said she would put me on their 'do not call list'.