What action can i take if made to pay for for site under coercion

This is regarding a site allotted in Mysore to my father recently according to the supreme court judgement. HISTORY: My father (Party A) had been allotted a MUDA site in approximately 1991-1992 and was asked by the authority to pay the full amount to have the site registered in his name. He was not interested in the proposed property the reason being the allotted site was in a very remote area and not much developed during the time of allotment and he did not render the such amount, and MUDA did not allot the site. Thereafter after 20 years between 2012-2013, we approached a lawyer through one Mr. Y (Party B) person available at all times near the MUDA office to approach and trap people with such as our case. He took all the original documents from us assuring to get the site allotted to us and had a contractual agreement between Party A and Party B, wherein, the contract expressly stating that he will bear the expenses of all legal proceedings, and once the site is allot