To cancel your ChatGPT subscription, be sure to do so through the same billing...

https://www.pfdbookmark.win/to-cancel-your-chatgpt-subscription-be-sure-to-do-it-through-the-same-channel-1

To cancel your ChatGPT subscription, be sure to do so through the same billing channel you used to buy it—whether that’s web/Stripe, Apple, Google Play, Business, or API