If you can't provide their AI with text answering their direct question (eg, "what is the support number for Facebook"), they'll find a document which does provide such text. If it's not you then it's a scammer or competitor. UX for these customers means presenting information in a way that sorts high in a semantic search and is robust to transformation.
If you provide text indirectly answering the question ("that number doesn't exist" rather than a literal number), you're liable to be scored as less relevant than a wrong but direct answer ("the number is 1555 SCAMMER"). You're also less robust to transformations, because you can't pull a valid phone number out of the text.
Or maybe I'm wrong, take any certainty implied by my language as rhetorical. That's just the pattern I'm seeing in these tea leaves.
I think in an ideal world, you could use speech recognition to let people leave a message, and open a ticket, as if they had emailed support@. When someone responds, the system gives them a call them back and delivers it using text to speech.
Mealy-mouthed corporate lying horeshit.
They are able, just unwilling.
If free-market libertarianism is as great as the tech bros want us to think, why do companies lie so much and so often despite the need for participants in the market to be correctly and full informed so they can make rational decisions?
Contrast with Experian, which has a number for consumers to call, but actually has an elaborate infinite loop in its phone tree that prevents you from actually talking to a human (this is by design).
If you're one of their customers (read: a business paying for their service), there's support you can call, but for individuals who have issues with their online Experian account or credit report, you can't, even if you're a paid subscriber to their consumer-oriented credit reporting services.
Frankly it's absurd to me that it's legal to do so. Any public facing company that is sufficiently large should be required by law to operate a phone service where you can talk to a real human being.
All of these huge mega corps are run with absolute impunity and there is often absolutely 0 avenue for regular everyday people to get in touch when they have issues. They direct you in these endless loops to FAQ's and "Community Resources"; even getting an email address is like getting blood from stone sometimes.
Part of the problem here is that Facebook (though in fairness, they are not unique here) has left this traditional path of escalation void, leaving only fake numbers. They don't even have a real number to play a recorded message affirming that there is no ability to call.
ETA: For instance, I notice Facebook appears to own the typo squat `facrbook.com`. I feel like it's the same principle, though I assume toll free numbers are more expensive.