Expat Properties — land deal on maharashtra - goa border - project name paradise city

Address:

411, 4th floor, gera imperium II, EDC Complex, PATTO, North Goa, Goa, 403001

I had booked a na plot in expat project called as paradise city in the year 2015-16, they promised to hand over plot due na registered in the year 2018, taking payment installment every month, which was completed in year 2017-18.
No registration done, no response from their office, concern person keeps on changing, starting from scratch. If they are genuine, they require to respond to every individual who has invested in their schemes.
My request is to keep me updated on the project from time to time. Also make us aware of the actual status of the formality going on. Delays to be compensated immediately.