Tech Mahindra — I haven't received my relieving letter or full and final settlement

Address: Hyderabad, Telangana

I was working as an associate for tech mahindra in hyderabad bahadur pally location till 29th of may 2018 and i was told that i would get my relieving letter and full and final settlement after 45-60 days. It was already been 60 days and i have made several attempts to contact the organization through their portal and also called the hr team but i was provided with no resolution. The hr team always tries to divert me to the remember. Techmahindra.com portal which is utterly useless as one contacted me back after several attempts to request for my resignation acceptance letter. On the portal they say that my issue has been resolved as they closed the ticket which i raised since i didn't even receive the resignation acceptance letter let alone the relieving letter. This is causing a lot of problems for me in my present organization. I would really like to have someone from the organization to take the responsibility and revert back to me with a resolution as fast as possible.