Anna University — Not issuing provisional certificate

I am studied mba in pallavan college of engineering kanchipuram, i have 1 arrear so i wrote the arrear exam in april-2021 my result published on may-22 as per annauniv policy provisional issuing after the result 30 days 7 month completed still my provisonal not issued i followup regularly but annauniversity every month they said this month end this month end we will provife the certificate but they couldnt provide pls consider my requesting letter. Verry worst university ever i feel guilty to studied this university.😏😏😏😏😏