To cancel Grok, be sure to do it through the exact billing channel you signed...

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

To cancel Grok, be sure to do it through the exact billing channel you signed up with—whether that’s grok.com via Stripe, Apple Subscriptions, Google Play, X Premium on x.com, or the console.x.ai portals for Business or API billing