Full refund
I bought 10GB storage for my iPad 3 about 3hours ago, but I want to cancell it. Please money back.
iPad (3rd gen) Wi-Fi, iOS 6.0.1
These are user-to-user forums, you are not talking to Apple here
I assume that you mean that you upgraded your iCloud storage (?). If so then there are instructions for downgrading on this page : http://support.apple.com/kb/TS4009 . For a refund you will need to try contacting iCloud support : http://www.apple.com/support/icloud/ww/