How do i pull up ad ad that has been taken down from cars guru site

Hi,
I purchased an infiniti FX35 2003 i saw on cars guru for $12,500 and i financed it with a
$4500 down payment. The sales car 5 Star Auto Plex is trying to dupe me. They put
$16,900 as the cars sales price on my finance papers. I need a copy of the ad i saw on
cars guru to show to the court. Thanks for any answer of how i can get a copy.