Hi Sreekanth, Kesar Exotica, Kharghar, Navi Mumbai id a completed project since October 2012 and people have taken possession of their flats. Did you ever talk to the builder or visited the project site?
Visit the developer's office and ask for the possession. As it was a FSI and CIDCO approved project and almost all the major bank and financial institutions had approved it. If there was any such issue with OC, then people had must discussed on it but there is no such information found in any real estate forum sites.