If say, some1 got hacked, and asked Blizz to investigate IPs etc. And say the hacked person has been botting for 20/7 the past 3-4 days, would they be inclined to ban you, rather than assist you?
Also, I'd agree that it's most likely malware, virus etc, but it's a peculiar case.. Did you ever buy/sell Gold to a site? 'Cuz I've been screwed over once (a few years ago before I had HB). I bought like, 10-20 times (small sums), and then suddenly they hacked me. I had stopped playing like a week before, and started getting mails from Blizz. You know, BNet action required etc. And I lost total access ofc, but they only used my account to sell gold and when playtime ran out they dumped the acc. I came back approx a year after I was hacked, made a ticket etc, and Blizz stated that yeah, I was hacked. So they restored my access. But things might have changed now, I took a look at the "X GM Thread" and saw something about Blizz not wanting to restore Gear, Gold etc cuz it's against the core mechanic of the game or something...
Good luck tho, if they'd give you a decent DPS set and a few 100g it'd be pretty easy to start over tho..