For the last 2 years, sent .4 BTC to satoshi dice betting address before they disabled it. They never returned it. I've tried contacting them many time. I will probably never see this money again.
Its better to create another thread on scam accusion then provide a proof that you got scam by this satoshi dice, then people can discuss about your problem because this 0.4 btc is a huge money, you also mentioned about that you already contacting the support but its appears that its never chat back on you.