Anna University — provisional/degree certificate

I was admitted to dr. Sivanth aditanar college of engineering, tiruchendur during 2005. I discontinued the studies during 2008 and readmitted in the same college during 2010 and completed the course during 2012 without any arrears.
I haven’t yet received 8th semester mark sheet, consolidated mark sheet, provisional certificate and degree certificate. I have given a letter requesting for the above certificate dated 13 april 2017 to controller of examinations. I followed up for the past 5 months but i didn’t receive any response from them properly.
The only response i got from them is that a paper from 2005 regulation mg1351 is not attended and we need approval from the higher authority to proceed further for additional papers. But the fact is during discontinuation i didn’t attend the mg1351 paper, but after readmission the regulation changed from 2005 to 2008 where the mg1351 paper is not available and i wrote additionally two papers (Cs51 and cs55) to compensate that single paper which i got approved from the anna university tirunelveli and i cleared that too.
Please kindly help me to resolve the issue and get me the certificates as soon as possible. My life is in stake. I got married and i am in a job where the company is hoping that i will get the certificates immediately for visa processing.