I received a phone call from 560-364-0021.  I was told I was entered into a Sweepstakes for $25.000, all I had to do was answer a few questions, so I did.  Then I was told I won a 100. gift card from Walmart, all I needed was to pay for shipping and activation. The first person told me it was $3.95 and the second person told me it was $8.95.  They wanted a credit card to verify who I am.
Right, that's when the call ended for me.
Be carefull.