Airtel — resolution to numbers barred under ndnc

Address:

New Delhi, Delhi

Airtel decided to bar my numbers based on a purported complaint about dnd violation. Without any warning or information.
Now, when i have been following up on this with their ndnc team, they cannot seem to move beyond "share a documented evidence that the complainant registered his/her number to receive such communication". The problem is that we do not know who the complainant is, or what his/her number is. That information is not forthcoming from airtel's ndnc team.
Till date, more than 10 email communications have been shared between us. I have given valid, logical reasons why communication with the purported complainant cannot be construed as unsolicited communication, but to no avail.
What surprises me is that this incident is playing out where i am being punished without knowing details of the crime i am supposed to have committed. Incredible.
Will someone from airtel's ndnc team be kind enough to respond? I am tired of receiving boilerplate email templates as replies.