My father had a open plot which he purchased from a third party , and I (my Age was 27 years and doi

My father had a open plot which he purchased from a third party , and I (my Age was 27 years and doing Job) gave some amount to my father to buy the same property from him . My Father told he will do gift deed to me as it will be done by less Registration expenses. As same he did gift deed on my name and registered in Sub Registered office. Later as the land costs increased ,my father revoked the gift deed by managing register office people without my notice and intervention.I am not aware of this till I applied Home Loan .And he wanted to sell the property to other person.I took personal loan,sold stock shares and gave the big amount to my own father and now I cannot tell to anyone outside. I paid some amounts(in Lakhs of Rupees) in form of bank checks to my Father. Now he continuously asking amounts.There is no bad economic situation as My father receives 25 to 30 thousand pension from Govt and no other expenses as everything is taken care by me .Now thinking if I paid the same amounts I might get some big property in open market. Sir please suggest me now what can I do, I can't imagine a case against my father, he is the most respectable person to me. Please suggest me .