Signed up for surveys on-line. Asked what interests were and opportunities would be mailed. Received letter from Mystery Shoppers, Inc. that included a $4200 check. Told to deposit the money and sent them a $3700 via Western Union so that they could check the Western Union process. I was given a list of stores to shop and told to spend $100 at one of the stores and complete the included form about the experience and mail it back. I was told that the remainder of the money was mine to keep. I deposited the check in the bank and waited for it to clear. The bank detected that the check was fraudulent, closed my bank account and kept the money that was in my account. As a result of this, my car payments were not paid and my car was repossessed.