Supertech — no visibility on project completion and cheating on subvention buyers

Hi, i have booked the flat inder subvention scheme at ggn azalia sec 68 three years ago, the project is still not started and in my recent visit to site as well as noida office of supertech they have no clue about timelines on any project completion.
They are stating that company is not in the position to refund and pay pre emi to subvention buyers.
I am about to file complaint against them as they have looted our hard earn money and given mental stress.
Please join me in filling case against them as i am contactable at [protected].