To cancel Grok, be sure to stop your subscription through the same billing...

https://seo.edu.rs/blog/eu-or-uk-14-day-refund-right-for-xai-grok-how-do-i-use-it-11135

To cancel Grok, be sure to stop your subscription through the same billing channel you originally used—whether that’s grok.com via Stripe, Apple Subscriptions, Google Play, X Premium on x.com, or console.x.ai for Business/API