Colive — Unfair legal notice after six months pending dues 30k+interest

While booking colive florence, BTM stage 2, bangalore I was told the rent would be 5k since some covid offer was going after 3rd wave of covid and there is no deposit amount. I paid full one month rent and checked in on 13feb, 2022. Even after pre payment of one month rent I was receiving mail rent due and the rent of the room in the app was showing 13k. When I checked this issue with the area manager they said app has misinformation and the room rent is on offer for 5k due to covid, so Ignore those mail. I checked out colive in first week of march itself due to emergency and updated my pg caretaker about it. Even lock-in period of pg is 1 month. How can they charge me 30k+interest (18%) and send legal notice me on email of all a sudden. Please look into this issue. Its not making sense to pay this heavy amount without even being informed. Also information on their app and what sales person say when you book the pg is different. If there is some covid offer why don't they update their website and app? Why are they still sending rent receipt with rent 13k? This is complete fraud