Mystery Shoppers

When i first started to try and make some extra cash online, i started doing surveys and then one day I got a check for 3,000 in the mail, it asked me to call a number so that the check could be activated, and that my job was to send 2,000 dollars wesern union to the company and then go to some listed stores and buy 300 in stuff and send them the reciepts, but to keep the rest of the money and everything i bought. My bank did some searching for me and it was a scam, if i would have cashed the check i would have owed the company it was really from the entire amout!