Mr. Murty has given valuable advice. Kindly follow it.
You may submit a gentle representation in writing under acknowledgment addressed to the good offices of your appointing authority, MD, Company Secretary narrating all previous representations { mention date, name/designation/dept/address of company personnel, and minutes of discussion} and conclude that you have affirmed that as per clause number …..in appointment letter dated….issued to you, company may adjust notice pay in FNF statement/settlement, encash paid leave in FNF statement, and supply you the original copy of the FNF statement so that you can act accordingly and pay any amount if payable by you. You may mention that company should supply you the acknowledgment of notice of resignation and final resignation letter, acceptance of resignation, work experience certificate/service certificate, relieving letter, FNF statement showing computation and disbursement of all payables, payment of FNF dues by bank DD only, Form 16, PF number, PF account slips of all years, attested copies of PF withdrawal/transfer forms {if submitted by you or acknowledgment issued by PF office in original, if company has submitted forms to PF office}, NOC/NDC etc. by redg. post only, so as to reach you in say next 7 days.
Yu may enclose the copy of your notice of resignation and final resignation and POD of both.
If you have submitted notice of resignation and final resignation, under acknowledgment and have retained copies and POD, company may not succeed in charging dual employment.
If your next employer is buying out your notice period and you tender the notice pay to previous employer by DD/cash/cheque you may be subjected to dual taxation. You should obtain Form 16 from previous employer as per FNF statement showing adjustment of notice pay.