Possession of plots in f 15/2 islamabad

I bought a plot in 15/2 in 2003. 60x90 in non possession area. I was told that it’s possible that the society will hand over plots in 6 months. In my mind i taught that even if it is two years then it’s ok. So far there is no sign that society will ever hand over these plots. Is there any one who can tell about the situation. It seems either the society has no intentions to start work and give possession or they have no land to do so. What’s the reality? Can some one tell us.