icloud storage refund
I purchased an upgrade to iCloud storage, but have since decided that I don't really need it. In the email reciept, it says "You may contact Apple for a full refund within 15 days of an initial upgrade purchase or within 45 days of a subsequent yearly payment. Partial refunds are available where required by law."
I'd like to cancel. How, exactly, do I "contact apple"? I can't find anything that seems approporiate here: http://www.apple.com/contact/
iPhone 4, Mac OS X (10.7.2)