PM me the screenshot. will try.
On one of my proxy sites I have this issue, and I've activated cloudflare to stop it. So far, it's been surprisingly effective. One day I had 20,000 bogus robot requests and almost all of those have been eliminated.
RewriteEngine on
RewriteCond %{HTTP_USER_AGENT} ^ScumBot [OR]
RewriteCond %{HTTP_USER_AGENT} ^AnotherIntruder [OR]
RewriteCond %{HTTP_USER_AGENT} ^\s+$ [OR]
RewriteCond %{HTTP_USER_AGENT} ^$
RewriteRule ^.* - [F]
Awstats has a section where it tells you the top ips that consumed bandwidth. Do whois on the first 3 and see which one you want to block.
You can also do htaccess blocking or php blocking. Or better redirect them somewhere they don't expect.