Those rewrite rules are horribly wrong. They not blocking wildcards. What you have set there are exact matches. Try modifying the code below...I use this on several sites for redirecting hitbots.
RewriteCond %{HTTP_REFERER} ^http://(www\.)?bestfreemature\.com?.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://(www\.)?coolteenpics\.com?.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://(www\.)?freesexcenter\.info?.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://(www\.)?pornstation\.info?.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://(www\.)?galleryhome\.info?.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://(www\.)?bestworldtop\.com?.*$ [NC]
RewriteRule ^.*$
http://www.freesexcenter.info[R]