Kakatiya University — OD certificate not received yet

I SriRamya ht no 17568T1512 had applied Original Degree certificate on sep 8 2023 and made the payment online as they mentioned I have to get the OD within 15days but still I didn't received it and when I'm trying to contact the examination branch no one is responding. It's much needed now I have to get my OD kindly resolve this as soon as possible.