Is this a scamcoin?
Yeah, but they'll definitely pump out code for you. These people would literally work for the dick in their mouth.
trusted exchange for this one?
Poloniex. They're beautiful people.
since I deposited some BNC to Hitbtc and wasnt credit to my balance. also a friend tried to deposit and got the same problem.
I can tell you where your first mistake is ... but I'm pretty sure you already know

Deposits in Poloniex are disabled and the other exchange on this post dosnt have volume.
This is news to me, usually PLX is nothing but prompt and well up to the task as far as decent-volume markets go. I'm sure they'll get in order soon enough. Maybe, in the meantime, you'd be better off starting an OTC thread/market?
Thanks in advance!
Any fucken time, bro.