To cancel your ChatGPT subscription, be sure to do it through the same channel...

https://lukasnpyy234.cavandoragh.org/how-do-i-request-a-google-play-billed-chatgpt-refund-after-48-hours

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