How do you as joe public report what you think is a scam ? Todays techknowledge should allow us,?

I was notified today that i have won the compensation Draw Sweepstakes ocation of North America for $250,000.00. they enclosed a check for $4,850.00 to cover the gst all i have to do is deposit the check and contact Ben Davis and let him know i deposted the check send a money gram for 3700.00 to the tax agent virgina brown whos adress will be given to me after ben knows the check was deposited. 1st clue.Ben Davis language is more of a Patel or Jalal then any of the Davis's I know..