Hacked or server error?

Good afternoon,

I need your attention with a problem.

I have 2 accounts:
account 1, has Alliance characters (the account from which I am opening this ticket)
account 2, has Horde characters;

I haven't logged on the Alliance characters for a few weeks now.
Now that I have, I have emails that tells me that I was selling on the Blackwater Auction House primordials, epic gems, meta gems, titanium ore stacks, saronite ore stacks, cooked food, etc., everything was value.
Also got ZERO Frost Emblems. I didnt sell or spend emblems. Plus, the heal gear from druid is gone from my bags.

My all level 80 characters were affected: druid, shaman, paladin and rogue.

I havent give my accounts names and passwords to nobody.

I really need your help.
It's my work for years now.
Its not fair.

Welp, it is clear that someone logged into your game account and cleared it from all valuable items. Nothing can be done to recover resources. If you lost items bought with coins, make ticket to ask for their recovery.

What is not fair is to ignore account security. You're one responsible for that.