I have never owned a timeshare in my life. The number they called is in a pool of numbers owned by the business I work for, but my number is the only one that is called asking me to sell my time share (that i don't have). When I tell them I don't own one, they hang up.
I just received another call from this number and as previously noted I did not answer it. It appears that my signing up and being placed on the do not call list was just a waste of time.