by loren_d_c » Thu Jul 21, 2016 10:58 am
If the frequent fraudulent user is coming from a specific IP address you can block that IP from your shopping cart and/or entire site using a .htaccess file. Talk to your host about that, or google 'deny access by IP htaccess'. As far as reporting it to the authorities, contact your local police department and ask them. Probably not much they can do, since the perpetrator probably doesn't live in your town, but they may have ideas who you can report it to if you want to.
-Loren