Self Service Item Restoration
We’ve recently deployed a new system that allows World of Warcraft players to recover items that they mistakenly sold, destroyed, or disenchanted: Battle.net Item Restoration. With this new self-service option, the recovery of such items is fast and easy.
This restoration option may only be used once every 30 days on active World of Warcraft accounts that are in good standing. With items that were accidentally disenchanted, the new system can be used to request a review by Customer Support for restoration. As this option has a limited availability and use, we still encourage caution when selling, deleting, or disenchanting items.
You can read all about this new service in our detailed support article: Battle.net Item Restoration.

Drak'thul
Barthilas
Frostmourne
Warsong
Twisting Nether
Eldre'Thalas
Gallywix
Jaedenar
Quacky! Lol.
Arathor
Alterac Mountains
Azuremyst
Frostwolf
Blood Furnace
Uldaman
Emerald Dream
Blade's Edge
Hyjal
Muradin
Oh wait you're serious?
Madoran
Hydraxis
Hakkar
Akama
Borean Tundra
Tichondrius
Blade's Edge
Ravencrest
Dentarg
Moonrunner
Llane
Hydraxis
Borean Tundra
Just log back into your account after it's downloaded and go on Hydroxis and play the character...
Or, you're trying to get an 85 Hunter for free.
Black Dragonflight
Kilrogg
Terokkar
Skywall
Being that you state that the char couldn't bring DPS, I'm assuming you meant during Vanilla / BC... (Ferals and Moonkins were laughable DPS at the time.)
Skywall
Akama
Azjol-Nerub
Destromath
Kirin Tor