University Of Madras — Lack of support from management

Respected sir/ma'am
I am a former student of Ramakrishna Mission Vivekananda College 2019-22 batch. After completing my graduation I wanted to pursue my higher studies abroad for which i required certain documents like letter of recommendations and degree certificate etc. I asked for my faculty for letter of recommendations which they accepted to provide but without letter heads or any proper format. My department (Accounting & Finance and Bank management) HOD is a very arrogant person and is always reluctant to help students. I am continuously asking for degree certificate but they say they didn't receive it from the university of Madras so I asked for a letter from college stating that they didn't give me the degree certificate and that tentative date when I can receive it for which they refused.
I request you to kindly help me get my degree certificate from University of Madras it has been 1 and half years since i graduated it is very difficult to go for higher studies without orginal degree certificate and i request you to help me get support from Ramakrishna mission Vivekananda college.
Thank You