Made this mistake once, never again.
@carnage4life You want privacy.com
The service provides one-time use card numbers & you can set a limit that can be charged, which can be zero.
@williamgunn @carnage4life lemme guess, they offer a 30-day free trial.
@drmorr @carnage4life They say they make most of their money from merchant-side fees, so it's free, similar to how MasterCard is free.