NIIT — when will i receive my certificate.. it has already 1.5years gone not received any concrete response from you

Address:	Chennai, Tamil Nadu, 600019
Website:	www.niitstudent.com

I have completed my course pgpit in.net at niit parrys center. I have completed my exams on june2016 and my internship also completed for 6months. Even though i have completed my course successfully, i have not received any response on when i will receive my certificate. Still more than 1.5 years i am contacting you. Your staffs are saying we still working towards providing you the certificate. It looks like there is no in progress of receiving my course completion certificate. I am really fed up with contacting you. Now its, 2018 came, but still you are working on the certificate issue. This looks like there is no proper action was not taken from your end. I need immediate attention on this.