post https://vinoshipper.com/api/v3/p/orders//cancel
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.