Copied below is the report from BBB Scam tracker. I called the toll free number and some generic guy picked up.
Dont call 876 as its not toll free and will be charged.
About a week ago I started getting calls that I had won $737,233. I was first instructed to call 866.978.5688. And then had to call another number 876.519.7119. Through these calls, I was told I had to go to Walmart and get a check for $757.23. In another call I was instructed to send a different amount of $300.00. I guess since I didn't immediately send the money they figured I didn't have the first amount so they lowered it. They couldn't even keep their scam story straight. First they said they were the Consumer Protection Bureau and then in one of the calls they said they were Publishers Clearing House. They also said they had to check something with the FDIC and IBM. Just throwing out legitmate business names to make them sound legitimate. I called the BBB to check it out because I was suspicious.