if you're based in Europe, try framing it as a GDPR issue. Article 16 says that data processors have to rectify data that is inaccurate or incomplete within 1 month. If they don't do that, you can raise it to your national privacy ombudsman as an incident. This being Facebook, there is a chance that they'll act on it.

Be sure to CC privacy@facebook.com and legal@facebook.com

Only issue: not sure that the GDPR applies to companies. And it's a 'pro' account I guess?