How to file legal notice

We sold our property to a buyer and we received 3/4th of the payment vide bank loan. We however made the registration (by paying the buyer for his registration and sending money to the buyer's mother to enable the buyer to pay us in neft for showing bank transaction of the sale deed amount) . Buyer promised to pay the 1/4 money in a months time. However we have not received the money yet and they are not properly responding to our phone calls. We are not interested in getting the property back , but we need the money. Can we issue legal notice for money recovery on the buyer's mother as the only evidence we have is the neft transaction made to her account ? Can a suit for recovery of money can be filed only based on this neft transaction? Should we reveal the background information of selling the property in the legal notice and in the suit?

Money transfer done .as per agreement machine not transferred on date. Seller not responding? 1.money transfer done(RTGS)to company bank account,seller not sending machine? 2.if I'm going file police case.is it useful? 3.what are sections ideal to punish him and his company? 4.If regular cheating person how will we approach? 5.Full money transfer done on RTGS.is it recoverable from him 6.is there any non bailable section for punish him 7.last week we send legal notice ,but company refused to accept it.is it offence? 8.is any way to stop his company activity ?

One of my friend told me that he knows a political person and he will get me a govt job. I had also trusted him as I know him since several years. He took 3.2 lacs from me (1.5 lac transfered to his account and 60k to one of his friend account and remaining amount took from hand) but later I got to know that he cheated me. I asked him to return my money. Though he agreed to pay the money but never returned a single rupee till now(its been close to 2 years) . Around 3 months back he gave me a cheque, it got bounced as the account does not have money(Like this he gave couple of cheques few months, he is just playnig with me to buy time and I really doubt if he has any intention to return money). I thought of sending a legal notice for cheque bounce, but I am afraid what reason I have to tell to the court. Would there be any problem for me if I send a notice from lawyer by giving reason that he borrowed money for getting me a govt job. Please suggest.