How does a lawyer know who to send the threatening letters to? This whole conversation exists on the assumption that you're not fully anonymous in this relationship.
It doesn't guarantee the vendor will win a final judgement but no court is going to prevent them from tracking you down.
evidence for that, please?
There are numerous advantages to a privacy.com number besides cancellation:
* you're sure that your real credit card will not leak out when (not if) they get hacked.
* You get notified every time the card is charged (or declined).
* You can set dollar limits so they can't pile on other charges.
* You have a complete record of all the charges on that card. You know that no other vendor can use it.
So refusing a privacy.com card, if they can even do it, would be a consumer-unfriendly act.