I had my account hacked once. Going through the "official" channels I was denied twice, the hacker installed an authenticator on the account which apparently supersedes all the proof of ownership I had. This went for weeks before I was 'officially' denied the second time. Oh and they complained about me opening multiple tickets for one issue after I was denied the first time (you know, the minor issue of trying to get my f**king account I spent 2 years playing back).
Apparently when you play from Australia for 2 years then suddenly you start logging in from Korea, install a (previously unused) authenticator, move your character to a major city, sell literally everything possible to sell on the trading post, then mail the gold to somebody else, that's not at all suspicious behaviour worth investigating.
It wasn't until I directly e-mailed the support e-mail (NOT going through the official "help me" account page) literally begging them for help that I got a response g...