If you’re like most Starbucks customers, you probably have a Starbucks card. But if you ever need to cancel it, here’s how to do it. To cancel your Starbucks card, go to the website or app and sign in. Then click on “My Account” in the top left corner. On the next page, click on “Your Cards.” Under “Your Card,” click on “Cancel.” You’ll be asked to confirm your decision. Click on “Cancel My Card” and you’re done! ..