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

https://instaquoteapp.com/what-details-does-apple-support-ask-for-on-a-subscription-refund/

If you want a refund for SuperGrok, first make sure Apple actually billed you—check your purchase history or iOS Subscriptions. Remember, canceling your subscription stops future charges but doesn’t refund past ones