Sorry about your loss mate but most of us have also been scammed before. Also, if you still have evidence about these guys scamming you then i think you can take them on once cryptocurrencies is approved in your country.
It will be hard because our country law is not strict for people.If you have enough money then police will work for you.I just lost all hope.
At least, that is good news for people in Bangladesh. They only need to wait for the confirmation that bitcoin is accepted. I think the government is already seeing the benefits of cryptocurrency for their people, so they are working to legalize blockchain technology. The bank will also support the government if the government wants to make crypto legal. After cryptocurrency becomes legal, I think people don't have to worry about using bitcoin, and they can report if there is an illegal activity for using bitcoin to the government. Maybe you can report your case to them. Who knows, they can help you to arrest the person who scammed you.
Yeah this is good news for Bangladeshi people.Also people will know about blockchain technology.I can not report my case and I already told it.But If government accept bitcoin then it will be easier for us,to cash out my btc to bank.also who arrested for using btc their case will be closed.Also have a plan to open a market in our area where we will sell product for btc