Contact the Police immediately and file a FIR. They will automatically get you the documents. Police will not charge you any money, since you are unemployed and if they are actually corrupt, they will be happy to register the case and help you since they can make more money from the school. If Police does not help, then write to Rakesh Maria, the Police commissioner and he is a helpful person. You can google for his email id. The alternative is to visit the Mid-Day office and tell them. They normally help out by making phone calls and highlighting in their newspaper. But make sure to take the acknowledgement of the school having received the documents, since whether its Police or the Mid-day newspaper, they require evidence.