To cancel Grok properly, you need to stop your subscription through the same...

https://tango-wiki.win/index.php/How_Do_I_Request_an_Apple_Refund_for_SuperGrok%3F

To cancel Grok properly, you need to stop your subscription through the same platform you signed up on—whether that’s grok.com via Stripe, Apple Subscriptions, Google Play, X Premium on x.com, or the console.x.ai portals for Business or API billing