To cancel your ChatGPT subscription, make sure you do it through the same...

https://shed-wiki.win/index.php/Can_I_Resubscribe_to_ChatGPT_After_Canceling_with_No_Penalty%3F

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