ComplaintsBureau.com is complaints site where anyone can anonymously report a company or individual who they were unhappy with. They don’t appear to have a direct removal outlet and emails to the owner Scott Breitenstein asking for removals will sometimes get posted to the site if he thinks you are a threat.
On this page they claim to not remove any information however we did have a user report to us that a company called Remove Names can get removals from the site.
You can try to email the site but use caution – https://www.complaintsbureau.com/contact-us
Some other resources we found
https://www.complaintsbureau.com/dmca-procedures
https://www.complaintsbureau.com/legal-information