As of my last knowledge update in January 2022, Facebook primarily provides support through their online Help Center, 1,855-974-1385 chat support, and community forums. They do not offer direct phone support for most users. However, policies and support options may change, so it's a good idea to check Facebook's official support channels for the most up-to-date information.

Instant Messenger: https://groups.google.com/g/microsoft.public.sharepoint.windowsservices/c/BxTbDef38So