If Apple charged you for a SuperGrok subscription, go to...

https://post-wiki.win/index.php/SuperGrok_Subscription_Shows_Active_but_I_Want_to_Stop_Renewal_and_Ask_for_a_Refund

If Apple charged you for a SuperGrok subscription, go to reportaproblem.apple.com to request a refund. You can also check or cancel your subscription via Settings > [your name] > Subscriptions on your iPhone