To cancel your ChatGPT subscription, make sure to do it through the same...
https://sierra-wiki.win/index.php/I_Canceled_ChatGPT_But_Got_Charged_Again_-_What_Are_the_Real_Causes%3F
To cancel your ChatGPT subscription, make sure to do it through the same channel you originally used—whether that’s the web, Stripe, Apple App Store, Google Play, Business portal, or API