Q: How do I het a Refund of iCloud upgrade purchase if I purchased it yesterday?

I purchased an iCloud upgrade for 10GB of storage yesterday but do not need it after I deleted my old iPhone 4 backup since I upgraded to an iPhone 5 and was able to restore my iCloud data. It says at the patent window that I need to contact Apple within 15 days to refund if I want to cancel but when I call them they tell me to use express lane for iTunes who then emails me back saying this is not dealt with in their department. HELP! I'm getting the run around. The statement to contact apple for refund made this seem so easy and commonplace. Why won't anyone help?!