Posting for a hacked friend
Write a ticket to support. Read the information on this page on how to do it. Getting to support does not need to have an account to do so. Even a support account is different from a game account.
ArenaNet Communications Manager
Have your friend contact Support by filing a ticket through the “Ask a Question” tab on that linked page. They will be able to assist him.
For tips on what information to provide in a ticket, please read this post and provide as much as possible to expedite the ticket.
Gaile Gray
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet