Thats really sad, but as now u must have realized , if they r not even strong enough to get RP for manager , thy wont pay u either.

If you dont have a contract copy, i think labour department wont be able to help you, but they must have given you or send you any letter or email for joining the organization, if u have a copy of it , then labour dept might help you .

but if you can send me your CV , that will be good