As per the e-mail bank sent to me which is also similar to yours, you have to pay $500 out of your own pocket through Western Union to my shipper address given to you.. After you send the money $500 through western union receipt will be given to you at the western union office. So you Get Back with the details of the money sent and reply to bank confirmation email with it. Once you do that then bank verify the western Union detail and confirm everything valid then they will release your total amount into your account include the Western Union charges. I hope you understand now