To cancel Grok, make sure you use the exact billing channel where you signed...

https://www.bookmarking-online.win/to-cancel-grok-properly-use-the-same-billing-channel-where-you

To cancel Grok, make sure you use the exact billing channel where you signed up—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