To cancel Grok correctly, make sure you do it through the same billing channel...
https://blogfreely.net/samuel-wang09/why-cant-i-cancel-grok-from-grok-com-when-apple-bills-me
To cancel Grok correctly, make sure you do it through the same billing channel you used: 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