Although no action is possible on cancelled orders, Amazon provides sellers with basic details about these orders so you will have a complete record of buying activity for your items and the ability to manage your sales and inventory levels effectively.
Cancelled orders are" completed" in the sense that the "pending" stage has been resolved. While some orders will be cancelled by a buyer before they enter the processing stage, other orders are cancelled by Amazon after hours or days of processing time. You may correspond with a buyer up to the point when their order is cancelled. If the buyer has questions after their order is cancelled, please direct them to Amazon Customer Service. Note that buyers can still leave a feedback or comment on cancelled orders.