If Apple billed your SuperGrok subscription by mistake, visit...

https://spark-wiki.win/index.php/SuperGrok_and_Grok_Are_Confusing_Me_%E2%80%93_What_Am_I_Actually_Subscribed_To%3F

If Apple billed your SuperGrok subscription by mistake, visit reportaproblem.apple.com to request a refund directly. Cancelling SuperGrok through iOS Settings > Subscriptions stops future charges but won’t refund past payments