Fake invoice scam

Victim Location 31036
Type of a scam Fake Invoice/Supplier Bill

Received an email that an i-phone for $699.99 would be delivered in a couple of days to a person living in another state and that it was being shipped through prime shipping services. The implication was that it was coming from Amazon Prime. When I called the customer service number, the lady told me that my account had been compromised, I verified the email and the last four on the credit card. She sent me an authentication code to change my password. In the meantime, she told me that I needed to get a security hacking card or software from Amazon to keep this from happening again, I asked her how much would it be, she could not tell me. Then I started to questioning her if she was really from Amazon. She tired to argue. At the same time, I got Amazon on the line and explained what was happening that's when I found out they were hackers. What convinced me to talk with them is that they sent the authentication code from the Amazon system. What should have alerted me if when she asked for the code. Hope this helps someone!