Periyar University — I haven't received my convocation certificate

Address:

31,Nadhimullah makkan street, Salem

I am an alumni of the department, Textiles and Fashion designing passed out in 2018. I haven't received my convocation certificate, since then. Though I have raised concern through my college and directly in the university several times, it means I have been trying for last three years to get my certificates, and I have tried to get my certificates in many ways, but since there are no proper responses over here. This is literally blocking my career growth and I would like to here any responses or guidance to get the status of my certificates as soon as possible. I would like to highlight that I may need to join a reputed organization by 10th July, 2021, for which my educational certificates are mandatory. So kindly expecting any responses.