Company should have settled your a/c and paid your earned wages and dues within a reasonable time of 1 month or within 60 days.
You have completed all the exit formalities. Hope you have the copies of exit form, and receipt of company property submitted by you, and NDC.
You have been following up on phone or verbally and the response given to you is verbal.
You should submit a written letter under receipt,addressed to your appointing authority,MD,Company Secretary and mention all of your representations in chronological order, that you represented to Mr.....on dated and he/she stated that .........., however till date your earned wages and dues have not been paid to you therefore their good office is requested to intervene and help you to get your payouts,F&F,form 16,NOC/NDC,experience certificate and meritorious services rendered by you,relieving letter, PF accumulation reports,PF withdrawl/transfer forms etc within 15 days by registered/speed post.You may mention that due to non payment of your wages you are facing financial hardships and require the funds immediatly.You may seek an appointment with them and press for release of your due paymentsand docs.
If you meetr them submit the minutes under receipt.
If this fails you may lodge complaint with local office of labour commissioner.
You can send a legal notice.