Not that I trust the "security questions", but if Amazon lets you use freeform questions as well as answers, it might help to make your first security question "Have you noticed this account has two factor authentication turned on?" with an answer like "Yes, so Amazon Customer Service will take additional care when being asked to reveal account information, right?"
Even if you can't do freeform questions, perhaps the answer to "What's your mother's maiden name?" could be something like "Have you noticed this account has two factor authentication turned on? Please take extra care before disclosing account details to anyone, Thanks."
Remember it's a human verifying this. The attacker just needs to answer: "oh, yeah i just spammed the keyboard with some jibberish" and he's in.
The other thing I noticed by the attacker going after me, sometimes he'd call/contact the service multiple times in a row. All he needs to do is find out from 1 support rep that the reset password is randomly generated. Then tell another support rep that its "some jibberish" and he's in.
What's your favourite football team? -> Genghis Khan 2nd XI What was your first school called? -> Little Horrors School for Hackers
etc. Easier to say, you won't lose the customer service rep's attention either :)