2 years? This doesn't make sense. Did you send that amount 2 years ago or did you send partial amounts which add up to 0.4 BTC through out this duration op? Either way, this was a stupid move since there are far more legit sites out there in comparison.
Try contacting
https://bitcointalk.org/index.php?action=profile;u=116564 who handles their thread in this forum(He has not been that active lately though).
"lately"? He hasn't come online for 6 months now!

Well, judging by the OP's inability to write a more full post with details, he's either is lying for unknown reasons (he doesn't look so angry tbh!) or he's just stupid. But I would expect competing site to create newbie accounts just to FUD on other sites.