Resale Flat Booking at Kandivli

Hello Sir, We had decided to buy a flat through a broker and we had finalized it with the initial payment of Rs. 51000/- via cheque from my wife's account. This deal happened in November 2017, stating that we would be doing full white payment and everything would be according to the signing of documents. We prepared a MOU which the vendor did not accept and made 3 revision thereafter which was ultimately not signed but keeping trust in the broker who asked us to pay the amount initial we paid a sum of Rs. 4,49,000 before signing the MOU hoping that would be easily cleared. Now the situation is that we prepared a draft agreement which had all the clauses as the vendor had stopped interacting directly and we were co-ordinating with our broker to tide this off. Our possession was supposed to be given on 1st April after signing the draft agreement and we did not receive any intimation regarding the same till the 8th of April. Following which we cancelled the deal via email to all our brokers and the vendors. How do I recover the money of my wife from him. We are co-joint owners in the property. Plz help.