Even if we are listing exchanges, HitBTC should not even be counted among. This is an exchange that is engaged in day light robbery like you said, no support, not even a good platform to trade on, several attempt to keep stealing users fund and so much more and I still wonder why people still make use of this exchange by the way.
People (mainly noobs) these days look for exchanges with soft to no verification policies, and exchanges that continue to list utter shitcoins. Hitbtc checks all noob-requirement boxes, and for that reason it managed to grow out to where it is right now. I think it's safe to say that 7 out of 10 exchanges are straight garbage and operating illegally due them not having the required licenses and registrations.
In the end, can we really blame some of these exchanges for being absolute scam holes? It's people's fault to use these exchanges with how much information there is available to read into before signing up. The noobs using these exchanges make sure they they act as the demand needed by these exchanges to exist. Without noob demand there won't be any scam exchange. It's that simple.
People really need to start looking at themselves and acknowledge how they are the reason exchanges as Yobit and Hitbtc are still a thing today.