I have ordered a book too many.

If you have ordered a book too many, you can cancel it without any problems. You can check My Studystore to see if you are still in time to cancel. Look under 'Orders' and select the book in question, then click 'Cancel'.
Did you already receive the book? Then you can return it. Select the item and click 'Return'. Then print the return slip and send it, along with the item, to the address on the return slip. Once we've processed your package, we will send you an e-mail.