Alternatively and potentially easier so that you don't need to jump through all of the hoops of finding where they hid the unsubscribe button and futzing around with the app:
use one of those credit card privacy generating services and cancel the card or set limits on the cards use after you create it. it offers super granular control over who has access to how much of your money, how often and for how long.
use one of those credit card privacy generating services and cancel the card or set limits on the cards use after you create it. it offers super granular control over who has access to how much of your money, how often and for how long.