Wait until the status of your eBay product is delivered and contact amazon either by chat or call, this is done by following the contact links on their website.
They will ask you for the tracking number, just provide it to them, they will tell you that the item has either not been received, or it has not been processed. They will then ask you to wait a little while to allow them to receive/process the item.
After a week get on to chat or call again, say the same thing, and mention how frustrated you are that you haven’t received the Gift Card yet, they will ask for the tracking number again.
They will now tell you that they are very sorry about the issue, and they will ask you to wait a month since the day you have originally submitted your trade-in, and if you still don’t get the gift card by then, you will be given a promotional credit for the same amount. Act stupid, pretend you don’t know what Promotional Certificate is, and ask them what it is, and how does it differ from a Gift Card.
Now after waiting for one month to end, contact Amazon and tell them about it, furiously of course. They will review your case once more, and will issue the Promotional Certificate to your account as promised.
