Oyo Rooms — deposit

Hi, i was staying with oyo life bangalore from 5-3-2020 to[protected]. My booking id was 110209. I had to leave the room due to lockdown. So i sent cancellation to oyo site on march 30. Cancellation also accepted. But they deducted security deposit amount for vacant period notice. Actually i dint sign any vacant period or any other rental agreement.
Without agreement how can they deduct my security deposit.

Plz do the need full