Yeah, good luck with that.  Who even knows what their laws are as far as what crypto exchanges can and can't do; plus you'd have to hire a lawyer that's willing and able to sue a company of questionable legitimacy in Hong Kong, and unless there's a huge amount of money involved here, it wouldn't be worth it.

I got scammed by these jokers before, but it was for a laughably small amount of an obscure altcoin (Curecoin).  The only reason I created an account with HitBTC was because that coin wasn't trading anywhere else.  After that I started hearing more complaints about their shady practices--but never anything about Skype calls.  That seems odd to me.

Anyway, good luck to you OP.  I have a feeling you're going to be shit out of luck, but I do wish you the best.