University Of Calcutta — not provided official transcript

Hi I needed official transcripts for by graduation marksheets from CU. We followed the process and submitted the application fully as described on CU website. The documents were received by them on 25th July 2019 and processing time as per their website is 30 days. However it has been more than a month and the foreign university has not received any communication or transcripts till now. I have paid $150 for the transcript.We have visited the office of registrar many times but never get any reponse from him. Dont know how I can resolve it.

The email ids given on the website for enquiries regarding official transcripts are not working and mails sent to the id get bounced back. Please help me to resolve as this is very very important for me.