As Helen said on 800notes:
Like previous messages here, I got this call to lower credit card rates, pressed "9" just to tell them remove my name, got hung up on, called the number back and the number belongs to Wyndham Exchange Rentals and they apologized, saying they have been getting lots of calls and are reporting the activity as their number is being used as scam and warned me NOT to give out any personal information, which of course I don't anyway. I, fortunately, have a phone that allows me to block numbers, and has paid off often. My caller I.D. tells me when these numbers come up as "blocked"