To cancel Grok correctly, use the same billing channel where you signed...

https://www.protopage.com/ada_kim6#Bookmarks

To cancel Grok correctly, use the same billing channel where you signed up—whether that’s grok.com via Stripe, Apple Subscriptions, Google Play, X Premium on x.com, console.x.ai for Business, or console.x.ai Billing for API auto-recharge