NIIT — Future & career at stake: NIIT not providing degree transcripts

Hello,
I took admission in GNIIT+BSc IT programme offered by NIIT and completed my graduation in 2011. Now I require the transcripts in a sealed envelope to send it to WES Canada. The transcripts of semester 3 to 6 was provided by the university that gave me lateral entry into the third semester of BSc IT as a part of NIIT degree program. However my WES ACS is on hold because NIIT is not providing me transcripts for the first two semesters that was done from their institute. My career and future is at stake and I've been requesting for the transcripts in a sealed and stamped envelope, but this has been futile. I've lost almost two years and I don't know who to reach out to. Please help me to get the requested documents in the mentioned format.

My student id: R[protected]
Batch code: B090138