I purchased flat for 3100000 on 01/01/2012 .While booking the flat I gave 550000 as advance .
After one week ,we made sale of agreement for 500000 as advance and 2600000 through LIC loan.
Builder gave me cheque for 50000 on 07/01/2012 and money credit to my account 0n 10/2/012.
I took the posession by paying the 2600000 through LIC loan on 04/02/2015.
Now builder demanding to pay back him 50000 with out any reason after 3 years. we don't have any document made for the amount 50000 .
is the builder has any liability to demand 50000.
Please help in this case how to proceed.