Airtel — Airtel Sim showing no network signal

Address:

Airtel, Dabagarden, Visakhapatnam -2.

Hi,

I priya using airtel sim no: [protected] (using this number since few years) in my new phone oppo mobile. Since yesterday suddenly my phone network stopped and showing no network singal. I checked my phone and their's no problem with my device. I have tried inserting Sim in different mobile but it's still showing no network. Can someone please fix this on priority. Since the above number is not working You can reach me to [protected].