Genpact — Genpact hyderabad wont provided me the relieving letter instead they absconded me..

Hi i an employee of genpact i left the company and i m suffering frm depression and migrain doctor adviced me to not to work in night shifts and also in the calling process i told this thing to my HR management in wallsgreen process (divya HR) in uppal hyderabad.They told me they will be sending me the relieving letter by email but it had been 3 month from now i didnt even received my relieving letter by email.They are not responding my calls and other ways of contact.They unnecessarily absconded me by telling lie that we have a openings in wellsfargo with all those fake details. Now i dont want to go that company.They made my carrier in loss. what should i do now.. .