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

https://wiki-coast.win/index.php/Reportaproblem.apple.com_Won%E2%80%99t_Show_My_SuperGrok_Purchase:_Here%E2%80%99s_What_You_Need_to_Know

If you want a refund for SuperGrok, first make sure Apple actually billed you—it could be through iOS subscriptions or another source. Check your Subscriptions in Settings to confirm. Keep in mind, canceling won’t refund past charges