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

https://fair-wiki.win/index.php/How_Do_I_Keep_Proof_of_My_SuperGrok_Cancellation_and_Refund_Request%3F

If you want a refund for SuperGrok, first make sure Apple actually billed you—check your purchase history or iOS Subscriptions. Remember, canceling the subscription doesn’t automatically give a refund. To request money back, go to reportaproblem.apple