This number 650 543 4800 is official number of Facebook for customer support alternatively you can contact to +1 855-777-1695 for instant help. You can....
https://uct.microsoftcrmportals.com/forums/general-discussion/22e7d408-24f3-ee11-a81c-000d3ab27ab6

To contact Facebook about a problem, users can utilize several avenues for assistance. One option is to visit the Facebook Help Center,+1 855-777-1695 accessible through....
https://uct.microsoftcrmportals.com/forums/general-discussion/78cdd0a2-76f2-ee11-a81c-000d3ab7475d