If you have changed your mind and want to cancel an order, you can do this until you have received a shipment notification. Send an email to support@reprapworld.com with "cancel order [your order number]" in the subject. To give you a refund we need your bank account details, so please include those unless you have paid using Paypal, in which case we will refund through PayPal. We will cancel the order and make a refund within two weeks.