why dont you get your own account, if your ex has changed the password on the WOW account then you will not be able to transfer your characters!
i got my own account, and then transfered "Longview" and blizzard lost him for about 8 weeks, and when i complained i got 3 months free play,
so the best thing to do is, get your own account!
i got my own account, and then transfered "Longview" and blizzard lost him for about 8 weeks, and when i complained i got 3 months free play,
so the best thing to do is, get your own account!