Disha Direct Marketing Services — cheating in open plot matter

I had gone through the advertising read. Open plot in poladpur — farm village, as. Santosh naik — disha direct marketing services had given many promises, but they have cheated to all investors in this and other project. I have invest 19.5 lakhs, no plot available there.in 2017 mr. Santosh naik had promised & given in writing to give back money in six months.
But he did not give any amount so far. I will suggest to get together all investors to whom he have cheated in this and other project to fight regd. This matter as he is enjoying with our hard earned money.