Meta does sell ad-free membership for Instagram and Facebook, it should make the subscriber a customer.

That's not really true anymore since they started offering subscriptions.

FB's paid customer support for users has not been helpful to me. Their support staff can't explain how their policies are implemented. They lie to users who manage to wade through the automated morass. And when you speak to them you find out they're incapable of correcting mistakes.

They absolutely are. They are paying with their data rather than cash.