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

https://www.4shared.com/office/NVC7Xm4Efa/pdf-7423-16916.html

If you want a refund for SuperGrok, first make sure Apple actually billed you by checking your purchase history. Look at your iOS Subscriptions to confirm. Remember, canceling the subscription doesn’t automatically give a refund