Before giving correct advice its better to go through the agreement between the occupants and the owner. What I have understood is you had shifted to this flat in february 2014 replacing another girl and paid her the deposit amount. The agreement was supposed to end on 31st March 2014 and it was to be renewed w.e.f. 1st April 2014. Did the agreement was renewed w.e.f.1st April 2014 and if so, whether your name is there in the agreement as one of the parties?. How could you vacate the place on 1st May 2014 without receiving your deposit money back.