You have 30k in their exchange.
Buy a flight ticket and go and visit their address. What's so hard about it? Make a video, go yourself to the Italian police in that area.
The carabinieri, believe me if you explain well they will help you instantly, just to scare them.
Also the Italian police is very friendly a lot against scams and thieves. For any logistic help in Italy I would be more than happy to help you for free.
Even travelling with you to Italy. I love Italy lived there a lot of times in my life so it would be my pleasure.
Not sure if you will ever recover the money but it's worth trying it
OP do not want to reveals his identity. Why do you think he will goes to their office?

And of couse not, this 30k is not acquired with illegal activity. I guess, OP want to protect his privacy as everyone have to! I protect my privacy too, but it is not hard to find my real name, because im linked to website. I protect my privacy too, i think about my real sensitive data and everyone have to. And of couse I'm protecting Coinfan and I really belive he will get his money, because they belong to him!
Actually, as I posted on the OP, there is no longer a privacy issue:
XII) This scam is now on the european arbitrage system, after a complaint with full disclose of identity. My accusations aren't no longer anonymous. They had no right to KYC on this case, but now they know all personal details. But they are still blocking my money.
So what happened finally? I read at a moment they said they won't reply anymore, how it is possible nothing to happen yet to these guys?
EU works slowly that's for sure and arbitrage court will..reply in 3 months if you are a luck guy but still..you have to solve it soon.
You spoke before again taxes. They have on CMC mostly a 100 btc daily trading.
That means they do around 0.5 BTC from fees. From these in theory they would have to be forced at least 0.08 BTC taxes daily to the government.
But they can up to 0 if they have in their declarations that they have done investments in their capital