All communication channel are close.
Please tell me what to do?
Is there any possibility to be refunded or send the guy in jail?
please advise.
Pay more attention to what you are investing in, don't invest more than you are willing to lose. And whenever you find a scam check what they did so you will be able to spot scams easier in the future. It's not that difficult as long as you think rationally instead of being greedy.
There is no free or easy money in this world, so if you're not willing to spend hours or even days researching a project to make sure that it is genuine and offers real value you will without a doubt keep losing money until you lose everything.
So the best thing to do is to start paying attention now instead of losing everything and then starting to think about how you could've stayed safe.