Ok, so he does have the proof that he paid in your account Rs. 12 Lac…
Cause you requested it …
But, what were the terms of the repayment? He needs to come up with that … Also, legal standpoint wise … if he goes to the court he has to spend a good amount of time to get this approved in the eyes of the court.
Right now, you could may be get smart and record the calls prompting why are you doing this friendo … And all bollywood shit.
2ndly, you need to figure out how were you able to pay him in cash the 12 Lac rupees … Because the court would include Income tax as well
I would say get some people who know both of you are involved in this …
Last solution you have is … Declare Bankruptcy… Although its tough one …