What does a man got to do to get an answer from Steam Support?

I'm really pissed off. First I get this random Steam Alert because steam thought that someone has an access to my account(though I'm 95% sure no one has, it is probably just another stupid Steam bug). Then, when I try to contact support to fix this issue, I can't get an answer. I am waiting for 5 days alerady and nothing! First answer will probably be answer from bot, like most of the time when you try to talk with them -.-. So, what to do??

EDIT: They answered now, this is what they said: This account is currently being contested by multiple parties.
They are asking me for a screenshot of a box of first game activated on Steam... wtf should I do now, I don't have boxes anymore, only keys(on the other hand, the other one, probably some phisher, doesn't have them too, and I'm pretty sure there is one more info he doesn't have....)

EDIT 2: I don't think they will turn it off, they say I need to provide a picture of the box. This is unfair, I spent a lot of money into it, they shouldn't just take it away like that. And I'm pretty sure that the phisher, whoever he is, doesn't have all the account info that I have, especially some keys, because some of them aren't even saved on my PC, so how can he prove that he owns the account? I will complain about this, I will complain on forums and everyhwere else, and I am asking you, YES YOU, to help me with this and spread the word so that Valve hears me....

EDIT 3: This is their answer: Hello Jonathan,

The details you have included have also been provided by a second party and as such, we have restricted the account until ownership can be verified.

Please feel free to reply or reopen this ticket when you have the necessary information.

How is that even possible? I'm pretty sure I don't have all my keys saved in my email, and that's the only place where he could take it. Well, I'm gonna give them a screenshot from GamersGate, maybe that fixes something...

EDIT 4:
Hello Jonathan,

We will require proof of purchase for the first game registered to this Steam account to offer further assistance.

Please feel free to reply or reopen this ticket when you have the necessary information.

First thing I registered was Orange Box. As I said, I don't have the boxes, therefore, they will not turn steam alert off. Screw them. I'm gonna play games without Steam community. Time to spread the hate on teh internetz, and if you want to, you can join me.