there was some dispute going on between Parsavnath and paliwal resulting harassment for those who booked their plots there (from unverified sources), but as per my information, again from unverified sources, the dispute has been ended and soon they will start giving possession but thats not your query,
the answer to your query is below:
you have the option to file a case at Consumer Forum but pecuniary jurisdiction can be a factor, which needs to consider before filing)
another option is PLA (Permanent Lok Adalat), much speedy then Consumer Forum and result can be expected in 3-6 months,
RERA is another option but will have to look whether the project is registered under it or not and also it has some complication as its a new law.
therefore among three PLA is best as per my vision/experience