Airtel
Sim Registration Failed without any notification

Dear sir,

My number is terminated without any notification...

I am 4 year old customer of Airtel using Life time sim card "9890994409" from last 4/5 years.

I have received call on my number on 13th NOV.

But from 14th NOV morning i am getting msg "Sim Registration Failed".

Please solve my problem as soon as possible, this is my professional number and i cant change it.

I want the same number to be started again.

pls hepl me to reactivate my number...