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

https://wiki-cable.win/index.php/SuperGrok_Not_Listed_in_Subscriptions_but_I%E2%80%99m_Still_Paying_%E2%80%93_What_Now%3F

If you want a refund for SuperGrok, first make sure Apple actually billed you by checking your purchase history and iOS Subscriptions. Remember, canceling your subscription doesn’t automatically give you money back