I tried this feature from my bank (not BofA) several years back. It didn't work as I expected. Even after revoking the card, the merchant was still able to char

I tried this feature from my bank (not BofA) several years back. It didn't work as I expected. Even after revoking the card, the merchant was still able to charge me and the amount was just posted to my "real" card number. I called and complained and the customer service told me that once I had authorized the merchant to charge me, they would accept any future charges even if the card number was closed. Just curious, have you actually used BofA's service? Maybe the implementation is different now... If it works, it would be a great way to limit those automatic renewal situations.