DRT is meant for recovery of bank loans.
Write to PF Commissioner complaining against the company. Give proof that you were employed from what date, no PF deducted from your salary nor company paid its due. Did you pay profession tax? If not, write to the Commissioner of Profession Tax, 6th Floor, Suburban Vikrikar Bhavan, Bandra-Kurla Complex, Bandra East, Mumbai-400051. Also complaint to the Registrar of Companies, EVEREST, 100 Marine Lines, Mumbai-40002 that the company is in violation of various laws. Also write to the Labour Commissioner that the company has not paid your salary. Keep all original documents handy - appointment letter, salary slip, details of cheques, any memo issued to you any paper that can prove that you were a regular employee of the company. Write to Ministry of Labour, Sharam Shakti Bhavan, New Delhi-110001 also. Go on making complaints against the company. It will come to senses. Of course you can file a civil suit. You must have documents to substantiate your claim.