Kindly consult your elders in the family, competent and experienced well wishers, lawyer/law firm.
You may, submit a gentle communication/notice by registered post/followed by email, addressed to good offices of your appointing authority, MD/CEO, Head-HR, Company Secretary:
-quote reference of each representation by email/letter/phone call made by you (with its date, time phone numbers), and mention that Mr/Ms...........designation/department, office address, office phone numbers have been stating that payment of your wages, and other service documents shall be supplied in coming 7 days, by registered post but have not supplied, despite that the fact that you have been clamoring to get these.
-and demand that company should supply you by registered post say within next 7 days, acknowledgment and acceptance of your resignation, FNF statement, settlement of your a/c and payment of your salary and other dues, PF number and PF accumulation report, PF withdrawal/transfer forms, work experience/service certificate, relieving certificate, form 16 etc.
You may mention that:
-although in the offer letter dated...........supplied to you on by email dated..........was duly accepted by you by email dated................., it was stated by company that appointment letter shall be issued to you after you joining duties however despite your regular representations in person no appointment letter or any other document containing rules, terms and conditions was supplied to you.
-and even after you have supplied and submitted your resignation dated.......on dated..............and having worked for ........days after submission of resignation company has not supplied you the salary and earned wages till dated............( your last day in the office) while company should have settled your a/c and supplied you, your dues within ( 2nd date from your submission of resignation).
- and that you are facing financial hardship and your future ventures/employability is getting affected, and this is causing you stress and anxiety.
-and that, you shall be constrained to lodge your grievance, with concerned lawful authority, at the cost and consequences of the company if with in next 7 days your dues are not supplied to you.
In all probabilities companies is deducting notice pay. However you should maintain a stand that no detailed terms and conditions/appointment letter was ever supplied to you.
Hope you have submitted the company property ( if any) and has obtained the acknowledgment.
If this does not work in your favor you may lodge a complaint with o/o labor commissioner, or issue legal notice from your lawyer.