Airtel — sim is not activated after being ported from aircel

Address:

Khordha, Odisha

Sir.
Iam from Bhubaneswar. I had a aircel sim which had stopped working due to its bankruptcy. So i opted to port out of the aircel.
So i chose the best service provider in india that is AIRTEL.
But i am facing certain problems.
I had ported from aircel to airtel at 21/3/2018.
It usually takes about 1 week from the date of porting to activate the sim. But till now it has not been activated. I could not do any type of official work . My phone number .
I would be very thankful if someone could resolve my problem.
Thank you
-syed sohail