Ravi Group — Delayed possession of flat

Address:

Malad west mumbai

Hi sir/madam, I'm ivan Rodrigues.
I had booked a flat in ravi group's gaurav discovery A wing 5th floor in malad west mumbai in 2012.but until now I haven't got the possession of my flat which was promised 3yrs back.also there is no response from the builder's about the status of the flat and they only call to ask for money . I'm paying every month for my EMI from hdfc loan.no feedback from their side against my call or what's app messages.now I'm fed-up and want to take a refund.