This is an old, old scam that's not just targeting Amazon shoppers. Any email that asks you for personal or credit card information is not to be trusted.
Recently suffered a brief lapse in judgment and had this kind of run in with Xfinity where I had recently made some changes. I realized I'd been scammed and had my credit card cancelled and reissued to be safe.
In my case, the Xfinity logo was very convincing with just a little accent mark where there usually is none.
Always check the sending email address. It's often a jumble of characters rather than an Xfinity or Amazon.com address.