i received a letter with a checkfor $3995.00 stating I had won a lottery. They requested a check back for $2,100.00. The letter stated I had won 65,000.00 however, I had to send the $2,100.00 for fees and taxes first. I called the number (647) 210-7558 and spoke to a man who's name I don't remember now, however, he told me to wire the $2,100.00 to a certain bank in houston texas and gave me man's name a number. He told me to deposit the $3995.00 which I did deposit and then went to my bank to check it out, and of course my bank checked it out and it was a valid account with a hold on it due to fraudulent checks made on the account.I did not wire the money back, however, I did have to pay for several. long distance phone calls to canada on my cell bill at the #647-219--7558.I called my cell bill and they stated the call was generated through a  "micro-cell solution, Inc. " company which is a cellphone company. The company was *Advanced Control Tech. Inc.DO NOT cash these checks no matter what.The man on the phone told me that this sweepstakes was sponsored through American Express, Visa, Walmart, Walgreens and American Airlines.  This man is very convincing. Do not allow him to scam you.The check was on a "Sovreign Bank" which is a real bank, but thechecks are fraudulent.