Colive — Rent fees post vacating the place being deducted from deposit

I vacated the place(Colive benton) on 20th may, and did pay may month rent without even living there.
I was told by the property manager and the community manager, that this month money you will have to let go off, but deposit would be refunded by 15th of next month. And now, they are asking me to pay rent and all that, and deducting it from my deposit which is totally unfair.
I have all the proofs over the managers, how I was promised what, and how I am treated once they have the money authority, and have taken this action only when they have become so irresponsive, and if needed will take it forward to.
I need my deposit back immediately.
thanks