Announcing the returned check for 2.5 M dollars, not realized, on my name. The caller knew my name and address asking me why this happened.Later he said that he will investigate and will call me back on the matter.Will he?? I suspect this is a scam.

Prize Offers: You Don’t Have to Pay to Play!
http://www.ftc.gov/bcp/edu/pubs/consumer/telemarketing/tel17.shtm

excerpt from FTC CONSUMER ALERT
A Dozen Ways to Protect Yourself
The next time you get a "personal" letter or telephone call telling you "it’s your lucky day," the Federal Trade Commission encourages you to remember that:

1.Legitimate sweepstakes don’t require you to pay or buy something to enter or improve your chances of winning, or to pay "taxes" or "shipping and handling charges" to get your prize.


If you have to pay to receive your "prize," it’s not a prize at all.