To cancel Grok, make sure you do it through the same billing channel you signed...
https://www.save-bookmarks.win/to-cancel-grok-properly-make-sure-you-stop-your-subscription-through-the-same
To cancel Grok, make sure you do it through the same billing channel you signed up with—whether that’s grok.com/Stripe, Apple Subscriptions, Google Play, X Premium on x.com, console.x.ai for Business, or console.x.ai Billing for API auto-recharge