I too pre-ordered Final Fantasy XIV from the EB games in my area, and did not receive a pre-order code from either the employee on or the receipt. I e-mailed EB Games, telling them where I'd ordered the game from (the store number should be located on your receipt), and told them that a pre-order code was supposed to have been added, and asked how I could go about getting it.
They replied that they were sorry I did not receive my code, and that my request was sent to their "Premiums Department" for review and processing. Later that night, I got another e-mail from them, with the pre-order code inside.
So, I'd suggest firing off an e-mail to EB Games (help@ebgames.ca), tell them when and where you ordered the game from (but don't disclose any personal information), and ask them about getting the pre-order code. They should be able to help you out...