1-855-407-3999 How do i contact Facebook customer service by phone?

1-855-407-3999 I own a business and have an angry customer that keeps opening fake Facebook profiles to post bad reviews on my business Facebook page and is promoting other business in the area on my page.
Who can i get a hold of Facebook customer service to remove those fake profile fake reviews?
Thank you.
https://www.facebook.com/help/community/question/?id=132902794135366
https://www.facebook.com/help/community/question/?id=132903600801952
https://www.facebook.com/help/community/question/?id=154167385323663
https://www.facebook.com/business/help/community/question/?id=154169921990076
https://www.facebook.com/help/community/question/?id=148026649152262
https://www.facebook.com/business/help/community/question/?id=148026989152228
https://www.facebook.com/help/community/question/?id=128920927826805
https://www.facebook.com/business/help/community/question/?id=128923747826523