Changing shipping address on amazon after purchase?

So my aunt ordered me some iPhone cases off of her amazon, she bought two for me and one for her, thing is we live in two different cities so, i won't be able to get my cases. I was wondering how could i change the shipping address on the cases? They haven't been shipped yet because she ordered them yesterday. I tried looking online but they said next to "shipping address there should be an edit button but there isn't. I know i can't change the address once they ship.

Go into your accounts page scroll to the bottom under "let us help you" choose "help" then under "recommended topics" choose "need more help" then "contact us". You should be able to choose texting or phone call. Don't send an email. Choose immediate help so order doesn't ship while you are waiting