The people behind this number are scammers. They pray on the elderly and feeble (those who would believe them). They come across with any scam they can. It might be that you've won a sweepstakes and they need you to send them money, for whatever reason, before you get your prize.
BE AWARE....THERE IS NO SWEEPSTAKES THAT YOU CAN WIN THAT WOULD REQUIRE ANY MONEY TO CLAIM THE PRIZE.
These people are the scum of the earth, made up of scammers. It's good to know they will reap what they sew, but hopefully it won't be with your money.
There is nothing good coming from anyone who is calling from this cell, unpublished number.
Don't be fooled.