Let me get this straight, From the time you had
an issue with them back in December last year, they never bothered to reply to your messages or help you resolve the issue or is this a fresh problem that needs another form of support?
Nope, same problem from December, been trying everything I can and absolutely zero responses.
You might wanna create a scam accusation thread if you still don't get any response from the manager.
https://bitcointalk.org/index.php?topic=260073.0Read this topic first, gather your evidences and post them in the right format. That should ring some bells.