[toomuchtodo]

“How to freeze your work number”

https://news.ycombinator.com/item?id=33212195

[MerelyMortal]

I would do the verification over email as that means they didn't typo whatever email you gave them (easier to typo an email address rather than a phone number).

[aSockPuppeteer]

You still need to email them two forms of identification (personal ID and mailing address) then it takes three days.