Keep calling my number and not leaving a message.

Caller ID says Clayton Chiropr.  Robo voice for free cruise to the Bahamas for taking their survey.  Google search does not show a Clayton Chiropr in Delaware.  This is obviously a spoofed number scam.  I never do surveys, donate to charities, and seldom respond to callers because 95% of the calls on my land line are frauds or scammers.