Sale deed expiry dat is 3 yrs

Hello sir Im ekatva, i was willing to buy the property.... N agreement was made on 100rs stamp paper... Dated on 1:08:2014...but nw i came to knw dat the contract has been expired bcz its more then d 3 yrs frm the date of commencment. But i hve gve 10lac through cheque.. And the registry period is of 6 month frm the time of commencement..but he hvnt come for the registration ofc... Bcz the balance amt should be given at the tym of registry... I hve made the bank D.D IN HIS NAME.. He always makes excuses dat his wife expirys or he is un well or he coudnt get reservation in train( bcz he live in other city).... But we acepted all his excusses in good faith.... Nw v came to knw dat he is trying to cheat n waiting for the contract to expire.... There is no any legal notice frm both side .do my money is at risk... What should i do.. Plz help..