Colive — Not Refunding my deposit, and even asking extra money

I checked out of Colive Garnet, Hyderbad on 30th Oct.

I had raised a notice period over their customer care service since their ios app doesn't work at all when I tried to do it myself.

I was told by the property manager and customer service that I will be receiving my refund after the 15th of the month.

Now I received an email saying to pay an extra 7k which is in no way legal. ( 4k electricity bill which I have already paid and more things.)

I need my deposit back as promised.