Anna University — regarding provisional certificate and original mark sheet

Respected sir,
I had completed my graduation in jct college of engineering and technology, coimbatore, in the stream of b. E petrochemical engineering.
That college is affiliated under anna university in the counselling code of 2769.
I had completed my graduation in 2017. Still now i didn't receive my provisional certificate and original mark sheet from sixth semester to eighth semester. But other departments students in my college received all certificates which i mentioned above without delay.
If i asked about this issue to my college they telling still now we didn't receive any certificates from university.
I need provisional certificate for applying jobs. But still i didn't receive. So i kindly requesting you to end this issue as soon as possible.
Thanking you