Fraud Case

Me & My husband has provided the approx 11.5 Lakh in bank & 1.5 in (March 2017) cash to one of his friend who was giving very false claims that he needs money for a very good plan, we just need to give money & he will repay the money with additional amount. It's been more than a year that ha has not given any single money & always claims that i will give your money in next month or next fifteen days etc. He gave us two cheques as part payment of 1.5LK & 2.65LK (Jan 2018)which got bounced due to insufficient funds & signature did't match . Finally we have gone to Police & police confirmed with him over phone that he owes money & He promised to come in next fifteen days with some money & rest cheques. But he didn't come (claimed that he had some emergency in home) & gave another 5 days time to come. He again didn't come & asked for 5days again. We showed police enough evidence of him partying with his girlfriends on the day which he promised to come & later on claimed that he could not come due to personal emergency. We finally decided to file FIR complaint under 406 & 420 as of now which police in not registering & making excuses to get it delayed. We have filed seperate case of Cheque bounce now. what should we do? We have already make enough political pressure on police for this case but they are taking it very lightly & giving hints that in these type of cases police don't have enough power to do something. We are going through so much of mental presure , its' just like mental torture which we are going through since we paid him money by taking loan from bank under good trust since he was good friend of my husband. What we can do to make him suffer & got our money back as early as possible. This man is of 28 years old & from noida