Your are able to cancel orders from within the Bookvault portal, if the order has not progressed too far.
When viewing your orders, if you select the 'Actions' button against the order and press 'Cancel'.
You should be able to cancel an order only when it is at the 'Created' or 'Approved' stage, any later the order would already start progressing through our printers. We can still look at cancelling this but you may still be charged for the production work that has already been carried out.