Meta is absolute shit when it comes to supporting their users. I "deleted" my original Facebook account that I started in 2005 (you can't actually delete an account, only deactivate it, which is bullshit) around 2008 or 2009, and created a new one. Somehow someone started posting diet ads from that account about 13 years later (about 6 months back).
I emailed support and said someone had hacked my old account and was posting diet ads as me, but I no longer had access to the account because it was supposed to be removed over a decade ago. The profile pictures of both accounts were clearly the same person (me), the email addresses were the same, and so were the displayed account names. Support said they couldn't do anything about it because they couldn't verify that I owned the account that was posting ads! 🤦♂️🤬
I sent them a response that pretty much said "are you fucking joking right now?!" and didnt get a response back, but the ads apparently stopped.