To cancel Grok, be sure to do it through the exact billing channel you signed...
https://www.yankee-bookmarkings.win/to-cancel-grok-the-right-way-use-the-same-billing-channel-you-subscribed
To cancel Grok, be sure to do it through the exact 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