Forum Discussion
The STAR WARS: The Old Republic - Knights of the Eternal Throne - Origin Eternal Empire Pack is a 60 day game time code delivered via email to be applied at http://www.swtor.com/redeem-code
If you have not received the email it is likely due to the payment has not finished processing, and this can be checked on your EA account.
So i guess the first thing to determine is has the payment finished ?
To answer your question though you will need to raise a ticket with a game advisor see this link you will need to select "origin" as the game .
However a refund cannot be processed until the payment has completed but the issue will be is that once the payment completes a code is emailed to you, and they cannot cancel this code per sey, but that is up to the advisor on how to proceed if you do want a refund.