To chat directly with Facebook support, call +1-833-561-4030 or scroll down to the Still Need Help? section and click on the Chat button located there.....
https://www.devex.com/people/how-can-i-chat-with-facebook-support-directly-1957456

Within the settings menu, locate and access the Help Center How can I chat with Facebook support? To chat directly with Facebook support, call +1-833-561-4030....
https://www.devex.com/people/how-can-i-chat-directly-with-facebook-support-1957456

To use this feature, visit the official help page or tap the link below the chat button. Once done, conversations will appear in your Messenger....
https://www.devex.com/people/how-can-i-chat-directly-with-facebook-support-1953074