Hello fellow Steeminas,
There seems to be like the well known exchange Hitbtc is scamming STEEM holders. I have made a post for a week ago stating that my coins that have been sent to Hitbtc been held by the exchange. I have contacted 
First they replay asking for the hash of the transaction. I have sent them all details they needed to track the transaction but then they have closed my ticket without an answer as you can see here:
I have showed them even that they have received the coins from me, but they also wont respond and instead they have cosed my ticket.
I just want to warn everyone who is using