If you joined as confirmed employee then :the notice period and notice pay in lieu of notice period applicable to a confirmed employee should have been stated in appointment letter issued to you, HR Policy-service rules and regulations mentioned in appointment letter , standing orders applicable to the establishment (certified/model0 and extended to your designation. YOU may check it. If it is 1 month then you may comply.
You can request the appointing authority, MD to waive it off.
You can write back to supply you the correct FNF statement showing all payables to you by company and by company to you and net amount for verification and acceptance by you, along with service certificate, relieving letter, Form 16 as per correct FNF statement, PF number-a/c slips, ESIC Card, acceptance of resignation by redg. Post only and you shall send the payment by cheque.
Since company does not want to provide all these docs your letter may put up the matter on Shut Up mode.
Regarding the threat of declaring you ‘Absconder’ you must specifically mention that you have not absconded and you have properly resigned by submitting resignation and may attach copy of it.
Absconder is a derogatory term and you may vehemently object to it.
If you are unable to handle the matter on your own, let our lawyer handle it.