The site is still new so there is no one who report and make a review against the exchange. As a user say above when you googling the review for this exchange the site's review just tell the exchange is safe for any malware but we don't in the other factor. I feel sorry for your loss, you have to make this incident aas your learning in the future. Never trust your money to the new exchange, just choose an exchange which has many user.
Sometimes Newbies are too lazy to do some research, For example in @Vickyalmighty's case. He only got to know that this thread that even has warnings about the scam existed only after getting scammed. If he had googled before sending those scammers the Bitcoins. He won't have been scammed.
All he had to do was just type "bitextrum exchange" in the search bar he would see some earlier threads from bitcointalk talking about the scam