mystery shopper Paul Wood Scammed single mother of 5 during the holidays Internet

Recruited for mystery shopper assignment through email.Received cashier check for 1,695$ and letter of instructions in a priority mail envelope.Deposit check,withdraw after 24 hours,deduct commission of 170$,use balance to complete two part assignment.

Assignment 1: Deduct 10$ from balance and purchase and keep any product for myself at my closest Wal-Mart.When completed email name and address of store evaluated,product purchased and how much it cost,and customer service professionalism to address provided.

Assignment 2: Pick a store listed in instruction letter that sells and loads  green dot Reload Prepaid Cards (MONEYPAK).Take three cards to register and load each one with 500$ cash with 4.95$ loading fee for each. When completed scratch back of cards for 14 digit pins. Email store name and address,name of cashier,how long it took to checkout,customer service professionalism,and pins include pictures of pins if possible.

I completed the assignments and a few days later the check was returned.