If you want a refund for SuperGrok, first make sure Apple actually charged...

https://www.beacon-bookmarks.win/to-cancel-grok-correctly-use-the-same-billing-channel-where-you-signed-up

If you want a refund for SuperGrok, first make sure Apple actually charged you—it might have been a different service. Check your iOS Subscriptions in Settings to see if it’s listed there