this is available trading time.
GOLD, OIL : 12:00 ~ 18:30 ( Monday ~ Friday)

you sent it on 2016-06-21 18:48:16, so it did not bet.

please wait, we will refund you soon.
thank you.

Edit :

i refunded you. txid is https://blockchain.info/tx/19d1ee72dc4c18d5464640c9c205fe4a182c780159f318ece41a178c41e58a14
thank you.