You need to sue Justin Sun (and Steemit Inc, although they are powerless with little staff and do the boss' bidding). Demand immediate reversal of the freeze as well as compensation for the lost funds. Justin is the main culprit, he's the one who put those idiot witnesses in the top20 and allowed them to wreak havoc. They are amateurs who have little experience in running the network. I don't support doxxing, but this level of irresponsibility from Justin Sun has reached high levels of madness that anything goes at this point. I wish you the best of luck retrieving your funds.