Airtel — airtel postpaid sim not working suddenly

Address:

602405

Suddenly on 13th dec, 2018 the airtel sim on my phone stopped working. Initially thought it might be a phone problem. Restarted phone several times, changed sim slot, tried it in another phone, tried stopping other services like wifi. All of no use. As i work in night shift i couldn't do my any work
All this without any intimation from airtel. I was about to receive important calls and messages on this number. Lost peace of mind due to this carelessness.

I would like signals on my phone be restored as soon as possible, and additionally they need to compensate for loss of peace of mind, and loss of opportunity due to missed communication during the period.