If I had that kind of BTC and Binance froze it I would immediately fly out to their office negotiate with them to settle this problem once in for all or at least speed up the process since you said the local authorities doesn't provide much of a help.
Probably, people suggest the same in r/ thread so do I.
That's not just penny of BTC that was frozen out there but worth 1k+ or millions of $$ as its current price, I'm sure OP can get a better lawyer to settle this.
It did get enough publicity I remember them saying his case was on investigation. Binance blocked his account because OP gave most of his information to a scammer and couldn't provide enough proof that's according to the top reddit comments(threads mentioned below).
I don't understand why people there keep stopping OP coz he was scammed by merely a video call in skype with binance, and email convo, whereas OP provides a screenshot with the email header of binance on zendesk, unless OP gave his login details where it will be questionable for support asking login details