Teleperformance Jaipur - Manipulated my Last working day Marked me absconded Asking unnecessary money to make FNF with incorr

My Case Detail
I formally resigned on **n Jan/**, using online CRM application and mentioned that I may require early exit which was accepted by Manager initially.
Step * I requested my last working day as *nd March against **nd March (I served ** days’ notice against ** days).
Step * during my notice period I made multiple communication regarding my early exit requirement wherein I did not get resolution. (When I asked how much I had to compensate I was referred to HR by my Manager than HR told me that it would be taken care of by dedicated FnF team.
I also notified to HR time before my Exit.
As discussed with Supervisor initially, I handed over all task and knowledge transfer before my last working day. I have submitted all the assets assigned to me on my last working day *nd March. My one-month salary was already on Hold to pay the required dues.
Important - Even post my last working date they put me in system and eventually marked my exit as absconded (I have never been informed nor it was written anywhere in policy).
I raised my concern to HR management however, no one assisted with my concern.
Please note that I have maintained professionalism throughout my tenure and not even a single instance of any advisory even for misconduct or low performance.
Later when I asked about FNF team, I was asked to pay for full ** days salary’ to release my full and final.
I was almost hopeless until I saw Voxya recently
They not only asked for extra money but also manipulated my last working day from *nd March to * March in his database.