Cancelling an order is never an issue. You can call us and we will do it with you on the phone immediately or you can message us and we will take care of it as soon as we can. Please be advised that banks love to take your money right away but sometimes sit on credits for a few business days. This is your banking institution, not us. Orders cancelled after the parts have shipped will not receive shipping credit as we will cover the cost of rerouting the shipment back to us.