University Of Madras — B Com Mark Statements not Receive. Reg. No. A17614UCM7201

I am qualified B Com degree in December 2020 examination. First received my all mark statements, but Date of birth is incorrect in all mark lists.
I submit and fee paid to correct DOB. All my Degree original mark lists( 3 year wise statements and consolidated ) sent to university E1 section on 06.05.2022 and same is received in office on 11.05.2022.
I can't get my certificates. In September 2022 my cousin received consolidate mark list from university office directly. but I cant get my year wise statements then.
Again I sent copy of 3 certificates and self addressed envelop to E1 section and apply my mark lists on 07.11.2022 through speed post (Received date in office) but no use my certificate is not received yet.