i recived a winners notification, with a check for 5, 980.00 it states to call before you cash the check/ i called a woman answered she asked for claim number and then congratulated me for winning a sweepstakes that i won 250, 000us dollars she told me to sign the check open bank account and call her back i want to know if this is a scam or for real /before i go to a bank if you can help i would be grateful/and there are 20 declared winners