Apparently you were on FTC.
Asking to resign is.......... demanding resignation and can be termed ..................'Deemed Termination.
In your case the onus to prove demand of resignation may fall on you.
If it is established then employer may have to tender notice pay/compensation/liquidated damages/damages etc.
If the employer proves that you resigned by your free will than it can adjust notice pay as in contract signed by you.
In any case employer should supply acceptance of resignation, FnF sheet shwoing all payables to you and by you and net payable, FnF dues, salary slip of all months, Form16, service certificate, PF a/c slip of the year, ESIC card etc...................
You can also demand above mentioned documents and also copy of resignation sent by you on compnay's internal email.
An able counsel specializing in labor-service matters after examination of your contarct/natuire of duties etc can advise you the right forum that you can approach:
O/o Labor Commissioner
Inspector appointed under Punjab Shops and Estbs Act (You may be coverd by the def. of employee as in the Act)
Inspector appointed under; Payment of Wages Act ( as per wages drawn by you and as per def. of wages in this Act. This Act does not discrminate between Workman and Non Workman.)
Their contact details, alongwith the Acts mentioned above, Trade Union etc , is on Dept. of labor website.
Our counsel may also opine that you can lodge complaint u/s;406,420
approach Civil Court for recovery etc
You can visit the labor Court,CGIT, Civil Courts, and talk to counsels specializing in labor-service matters.