Airtel — airtel sim not working even the new one

Address:

Ludhiana, Punjab, 141002

I got new airtel sim last year
My airtel sim is not working on any phone
Since 2 pm today
Got a new sim at 7 n even it is not working
The phone is showing emergency calls
This is so irritating
I have many important calls regarding my office
Kindly look into the matter
Such problems are so disgusting
Never expected this from airtel
If it doesn't get resolved i'll have to switch on to other network
Please resolve it as soon as possible