Colive — false promises and awful service

Address:

Plot No 816, 239-48, Sai Baba Temple Rd, near More Super Market, Green Garden Layout, Silver Springs Layout, Munnekollal, Bengaluru, Karnataka 560037

I moved into colive magnum on 23rd march, 2020. The price decided for a single room at colive magnum with the sales manager was 12000 rupees, but as it turned out, the sales manager had given false promises and i had to pay rent of 13000 rupees excluding electricity.
So, when i had a chat with the area sales manager teja, i asked him to start my notice period of 1 month, and he agreed to that.
The discussion so happened between us was that only 1 week rent will be deducted from my deposited amount and the rest would be refunded.
I already had vacated colive magnum premises on 25th may, 2020 which was my last month.
So, till today as i am writing this, i haven't recieved any refund.
When i raised a ticket on their colive app asking about the refund, they sent a template in which my refund is being shown as negative. They have not taken into account my notice period, and it is unchecked.
I want that i should be given my full refund, i have also attached the slip for the refund as sent to me by colive.
Neither teja (Area sales manager at colive) nor anyone else is answering to my calls. This is really a sham and pathetic service given by colive.