For that you meed to supply email addy registered with a/c, which you can't change without knowing current pwd.
ok, here's a senario, you have access to someones pc, they you want to do what you said you can't,
1, amazon lost password send to registered e-mail addy,
lots of people use outlook or some other e-mail client do they not, so the chances are that one of those e-mail addies is the registered e-mail addy, so once the reset pw e-mail is received the hacker or whatever can change what ever they want to
basically amazon should not keep cc debit card details