I had invested 0.5 btc @ https://flatbitcoin.com/invest/  on oct 5

Proof: Oct 5, 5:34 pm   FlatBitcoin   0.5BTC

Transaction ID   
io877ff4c525b2c2ed761c683214f19332c66c387ce20bcac263107976fe537c
Time   Oct 5 2013 17:34:59
To   FlatBitcoin
Amount   0.5BTC
Amount (BTC Sent)   0.5 BTC
Value when sent   $65.21 USD

Failed to receive a relply after submitting tickets and sending mails to support@flatbitcoin.com given at https://flatbitcoin.com/

Is it possible to recover the amount?

Please DO NOT INVEST IN FLATBITCOIN