[Resolved]  Wipro — experience letter

I am an ex-employee of wipro technologies (Worked from jun 2012-dec 2015). I've been sending emails to letters. [protected]@wipro.com. Settlements. [protected]@wipro.com, and finalsettlement. [protected]@wipro.com from the last 2 weeks for my experience letter stating that my job is full time and including my date of joining and release, work hours, role and responsibilities but i haven't been successful. How do i get my experience letter from wipro?