Cancel an successfully submitted order that has not yet been shipped. This will 
        result in a negative CR order in your Vinoshipper account. If the order has shipped 
        or been sent to fulfillment, it can not be canceled via the API and you must 
        contact customer service.  If the order has not been accepted by Vinoshipper yet, 
        you do not need to cancel it, you can just update it via the Update Order API.