Smart City Tijara Rajasthan — non refund of my paid money

I have paid approximate 421000/- to take a plot of smart city tijara. Now they have changed the plan and reduced the area of the plan projected earlier and now i want to take my money back but they have not yet refunded the amount. I have several times contacted to mr attar singh who is looking into this project and his phone number is [protected] and [protected] but no any positive response from him. I am going to file a court case against company. My phone number is[protected]. If anyone can help me please contact me at this number.