Greater Noida Authority — Builder not giving money back after cancellation

Address: Gautam Buddh Nagar, Uttar Pradesh, 201012

Website: www.premialtd.com

Hello sir,
I booked a shop in premia project 3years before but there was no construction of that project till last year so I canceled my property (shop) last year in July After that builder told he will give our 3lacs money back after 3 months but till today he didn't give us a single penny. I went there 3-4 times every time he is giving more time
I'm tired now this time their people threaten me not come again
I requst you please help me to get back my money
Ill be thankful to you