BPTP — Refund of money against a non allotted plot

Address:	Faridabad, Haryana, 121007
Website:	Www.bptp.com

Sir
I deposited over ten lakhs as advance towards a BPTP plot on faridabad.
I registered my change of address with the builder and got an acknowledgement.
Request from builder to pay subsequent amounts/ instalments were sent to the old address which I never received.
When I contacted them I was told that the plot was allocated to some one else.
Upon my request to refund my money there is no response.
Please advise.