A mobile service provider is going to file a petition against me for non payment of due. I have not paid the due since i found some wrong statements in my bill. They refused to accept that they have made some mistake on that which they billed upnormally. I can prove that they have billed wrongly. If they will take legal action means can i appear and argue by myself without appointing a lawyer or whether the court will appoint a lawyer for me at free of cost?
Can i file a complaint in consumer court?Please clarify.

