We're excited to announce that we've fully migrated the Xbox Forums to their new home, here on the Microsoft Community forums!
As of today, going to forums.xbox.com will redirect you here to the Xbox area of the Community forums. We've moved all of your existing threads over so you can continue and start conversations with the new forums experience.
We sincerely appreciate the feedback you have provided over this transition and can't wait for you to check out the new Xbox Forums!
I dont think you are going to be able to as all purchases are "final" however Ive known some refunds be given but it is down to the xbox support agent you speak to. they may allow a refund for the preorder however you can only do so by contacting support