Contact Apple about canceling your order and then order it through the link provided for getting a discount.
If your item is in Processing, you can cancel it online before it ships. Go to your Order Listing(Opens in a new window) page and select an item to see your order details, then select Cancel Item.
Once you’ve submitted your cancellation request, the status message of that item will read Canceled or Pickup Canceled. If you canceled an item that was shipping to a physical address, you will not be billed for your item. If you canceled a pickup item, you may have been billed. We will initiate your refund immediately after you submit your cancellation request.
If you are unable to cancel your item online, you may be able to return it. To see if your item is eligible for a return, refer to the Returns & Refunds help page [ Returns & Refunds - Shopping Help - Apple ] or speak with an Apple Specialist at 1‑800‑MY‑APPLE (USA). This page has telephone numbers for contacting Apple for support and service ➔ Contact Apple Support - Apple Support