I just signed up to the exchange as suggested by my friend, if it is a scam he could never suggest me. From this I believe this is one among the trusted exchange. Particularly issues arise with every exchange and the same might have happened with few users and for the same we cannot indicate it as a scam.
What is that for logic. I can use something for years and recommend it to a friend without knowing that it actually is a scam. I'm not saying HitBTC is a scam, because it likely isn't, but your logic isn't adding up.
On the other hand, I do agree that people should stop calling exchanges a scam just because they aren't working as we expect them to work. We just need to accept how exchanges aren't able to meet our standards.
We want the best, get a poor experience in the end, and we complain. This is how all exchanges are subject to the same complaints and user annoyances. Maybe it's time for people to use decentralized exchanges instead.