From our main website at http://www.jefatech.com, click on the "My Account" link at the top of the page. From there, you can log in and view all of your invoices.
If this does not work, or if you do not have an account, please fill out the contact form and ask for a copy of the invoice that you need. If you do not know the invoice number, indicate the date, amount, and any other information you have available. A copy of the invoice will be e-mailed to you.