If you placed an order and need to change the shipping address, you must first attempt to cancel your existing order using the method described here.
We are unable to issue refunds or send replacements for parcels delivered to a shipping address that was incorrectly entered at checkout. If a parcel is returned to us after a delivery attempt is made to a shipping address that was incorrectly entered at checkout, we will issue a refund equal to the value of the items returned to us.