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

https://wiki-spirit.win/index.php/Is_ChatGPT_Billing_Separate_from_OpenAI_API_Billing%3F

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