Dream Consultancy — Have taken my passport by fraud and now demanding for 15000 to return my own property.

Address:

231 Siddharth annexe, above McDonald's, sama savli road. Vadodara.

I saw his advertisement on social media hiring employees for Singapore, i met him, and we decided 2, 20, 00 fees for issuing me a WORK VISA of Singapore, later after 2 and half month of time he sent me e-visa copy Stating Multiple journey visa, which I denied to accept as this was not the condition between us.
After waiting for few days I went to see in his office where I got shocked that office is closed and glass door of office were broken.
I tried calling him but phone was switched off.
Later some days I went to police station where I came to know that 18 more candidates have already filed a complain agains the same.
But the police man told me to wait for 15 days to investigate in detail and didn't lodged a fir. May be that must be their process.
Now I am scared if my passport could be misused by someone. So what can I do to block my passport..