Asking about my TIME SHARE which does not exist. Calls like this one have been numerous despite the fact that whoever called was informed not to call again yet they persist in this annoying practice.
We have been on the DO NOT CALL LIST FOR SEVERAL YEARS and yet unsolicited calls continue.
What is the expeditious way to put an end to this obscene practice ?

This is a suspicious telemarketer calling themselves "National Transfer", whose pitch is a "seminar" at which you can learn how to "get out of your timeshare ".  Sounds like a first rate scam.

Caller ID said "Missouri." Did not answer. What reputable caller would use the name of a state as their ID? Obviously a solicitor or a scam.

BILL FAGSSSSSSSSSSS ?     COLLECTION AGENCY  OR  FBI'S  PUNKS       BIG CROOKS  ?   THEIR  CROOKS   ?