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

https://www.charliebookmarks.win/to-cancel-grok-properly-use-the-same-channel-where-you-subscribed-whether-it-s

If you want a refund for SuperGrok, first make sure Apple actually billed you by checking your receipts or subscriptions on your iPhone. You can view and manage your iOS subscriptions under Settings > Your Name > Subscriptions