Invested in company by signing MOU. Now no returns. What can I do?

I had invested an amount of Rs.22 Lakhs in a company by signing M.O.U. for the period of three months. For the first two months he paid me the interest as he mutually agreed to pay me @ 6% per month. Afterwards till date he didn;t paid any single penny neither interest nor my initial amount. What action shall I do to recover my money. I submitted a written complaint to police station within its jurisdiction, but police are doing nothing. I met to the senior in the police station, but inspite of false promises, they are doing nothing. They had just filed Crpc 506 case against the accused since six months back, no action.