If Apple billed your SuperGrok subscription and you want a refund, visit...

https://domgodwinson38.gumroad.com/p/how-do-i-cancel-and-refund-supergrok-if-i-have-both-iphone-and-ipad

If Apple billed your SuperGrok subscription and you want a refund, visit reportaproblem.apple.com to request one. Go to the iOS Settings app, tap your Apple ID, select Subscriptions, then find SuperGrok