Unitech Group — Delay in possession of flat in Unitech Harmony sector 50 Gurgaon

Address:

Gurgaon, Haryana, 122001

I paid 95% of the cost (Rs 1.67 cr) of the flat No. 302, Tower 7, Harmony, sector 50, Gurgaon, in July, 2011. Possession was cotractually to be given by Dec, 2011.
I visited the site in Nov, 2016. It is far from completion. Doors & windows, electrical wiring, complete plumbing, flooring jobs remain to be started.
On meeting Ms Soni Srivastav, I was promised that the tower 7 shall get Fire clearence by Dec, 2016 and possession is likely by 1st, quarter 2017. This appears to be another false promise like many others made before. I have suffered heavily both financially and mentally.
I have now retired and urgently need the flat for possession urgently. Failing that Unitech must reimburse the cost with interest.