Annamalai University — transcripts and degree certificate

I asked annamalai university to send attested copies of my transcripts and degree certificate to nies usa (Credential evaluation organization) as this was the condition of the nies that documents should be sent by the university directly. I paid rs. 3600 as advised by someone from controller of examination annamalai university over the email but they only sent my transcripts and did not send the copy of degree certificate and now i am trying to get this sent through them but they have stopped replying to my emails. No one picks the phone numbers mentioned on their website. My admission is on hold due to their negligence and carelessness. They don't have any official email ids also, i could only found gmail ids.

Please help me in resolving the above issue.