Supertech — golf village project

Dear team, i have bought a flat in golf village (Yamuna expressway) which was supposed to be given possession by sept-17... However during the site visit on 7th sept i have found that the work has not been started and a visible delay on 3-4 years is down the line. This is upsetting and complete mistrust. Kindly let me know my options or shall i take the legal recourse which is obviously a options.