"number not in service"

They are running a scam, The call indicated that i have been selected for a cash prize or 9200.00 In order to receive the money I need to either buy a green dot visa card with a balance of 200, to pay for the cash prize. If this is not a scam then what is :)
Read more at http://www.whycall.me/416-354-1111.html#zr7QvFx6olHpimdd.99

The caller said he was making a regular Microsoft service call. When I challenged him he became obnoxious.