Fraud In the name of Investment!

Lodge a FIR and also file a case to withdraw all your invested amount from them.

Find out all the victims and through such employees, you can get a list of such local victims, then file a complaint to Collector and Supdt of Police for redressal without expecting an immediate positive result.  You may succeed only if you make effort as a group, you can also involve District Legal Services Authority.  Those groups which are having several thousand members in several states could not get a single rupee even after ruling parties involved and got such court orders decades back.  Govt stepped even in those cases, only after some investors committed suicide.  So first step is forming as a group and pooling certain amounts to seek needed legal/political help and day to day expenses.

What are the legal documentsagreed, executed and registered with the firm ? These documents shall be required to analyse before forming an opinion.

It is better to consult and engage a local prudent lawyer for proper analyses of facts/ documents, professional advise and necessary proceeding.