To cancel Grok properly, make sure to do it through the same billing channel...

https://bizzmarkblog.com/how-do-i-request-an-apple-refund-for-supergrok/

To cancel Grok properly, make sure to do it through the same billing channel where you subscribed—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