Livspace — Livspace not refund my deposit amount

Address:

249, Okhka Phase III, New Delhi 110020

Hi Sir/Madam,
We booked the Livspace for our home renovation and they took Rs 80, 000/- as booking amount. Before the booking I clearly mentioned what is to be done in my flat, Complete Flat layout plan or Floor plan was also shared with them. But now they are increasing their quote and demanding for more payment. Now I am asking for my refund they are denying. According to them within 48 hrs you should cancel but it is not possible because after one month they shown me what they are doing when I asked it is totally changed from the decided work they said you have to pay extra for that, why should I pay extra amount when everything was decided.