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 or iOS Subscriptions. Remember, canceling won’t give you a refund automatically. To request one, go to reportaproblem.apple