With this new self-service option the recovery of an item or items that were recently deleted or sold to a vendor can be restored to a character immediately when using the ticket submission system on our support site. For any items that were accidentally disenchanted the same method can be used to request a review by Customer Support for restoration.
This restoration option may only be used once every 30 days on active World of Warcraft accounts that are in good standing. As this option has a limited availability and use, we still encourage caution when selling, deleting or disenchanting items.
While Customer Service always strives to help whenever we can, with the introduction of this self-help feature we will no longer be able to assist with these types of requests.
Additional details can be found in the following Support Article: Battle.net Item Restoration.