Airtel Postpaid — NOC not given by airtel

Address:

Pune, Maharashtra

Airtel is not providing NOC without any reason for my numbers [protected] and [protected].
I sent an email to [protected]@in.airtel.com and called customer care, but they refused. I have also visited AirTel relationship centre Aundh, Pune. They refused me and said that we do not have authority to give you the NOC letter. People at relationship centre do not even interested to talk to me.
I have already paid my bill amount in advance.