First, contact a good and sincere advocate and he will study the facts and issue a comprehensive legal notice to the opposite party. Keep that notice as a bonafide document of facts adhere to that notice and file complaint in Consumer forum as a party in person. The cost of the legal notice may be less than Rs.500/- and that notice saves you from other expenses and entire expenses through forum may not exceed Rs.500/- in all. Every forum was provided with help desk to assist consumers.
Instead of proceeding party-in-person it is advisable to consult a local prudent lawyer with relevant facts/documents for appreciation, guidance and proceeding, if you are seeking some positive result against the opposite party to protect your interest.
TGK Reddi's suggestions are quite useless in practical. The presiding officer in every court throws the application to the dustbin, if not in order or as per law. He doesn't bother about anything else.