Cheque bounce case reason to mention while giving notice to person

My father have transfer money to third person bank account for a particular work. The third person give a cheque of same amount that if you work is not completed by 1 month you can have your money back .but 2 month gone inspite of many call & messages no response from the third person. He send message that in 3 days I will be having money in my account.My question are: 1) how to file cheque bounce case when the reason is not genuine for which money is transferred to that third person. 2) we know only home address of that third person.what he do. & Wat his profession is not known by us.. 3) The mediator can not be trusted.so which reason can I mention while giving notice to that person for giving back my father money.which can be sustained in court also. 4) can message screen shot from his mobile no can be given as evidence in court. 5) which reason should I mention so that he can't run..he own house & car on his name Can I mention that I have given money for buying his car or house.