Sale of Agreement Cancellation by Buyer

Hi, My Family Member had given a sale of agreement for the land owned by him for an amount of 50 Lakhs and has taken an advance of 1 lakh in cash and 50000 in cheque. Now he has done this without consulting family and after consultation with family, as a seller he wants to cancel the sale agreement. Sale Agreement was signed on Thursday in a registration paper. Only thing my family member remebers is the time duration for the payment been 3 months. The Seller is not sharing the sale of agreement copy when asked now on Sunday after two days of events. My family member is not having a copy of sale agreement which is making it more difficult for us. We see Seller showing arrogance and not accepting the cash when we try to return him. Adding he is not sharing the details of his bank account to transfer back cash. We are not interested in the deal since we see the seller manipulating our family member with his shrewd tactics now. We are stuck in middle and want to cancel this sale agreement before it matures in the very first week itself.