Better workflow would be to cancel the account by contacting customer support. Some cards offer one-time-use numbers, those work great for one-time transaction

Better workflow would be to cancel the account by contacting customer support. Some cards offer one-time-use numbers, those work great for one-time transactions but a vendor won't be keen on accepting them for recurring payments as you would have to re-enter a card number every billing cycle. Typically disposable numbers are easy to identify (for the vendor at any rate), much the same way a Visa or MasterCard are different from each other. You can see a few parterns here: https://www.paypalobjects.com/en_US/vhelp/paypalmanager_help/credit_card_numbers.htm https://www.paypalobjects.com/en_US/vhelp/paypalmanager_help...