Airtel — not able to receive calls and messages after porting from vodafone

Address: 560103

I am ported to airtel on 18th dec 2017 my sim is activated and iam not able to recieve calls and messages on my sim
I tried reaching customer care on 121 and 198 but all efforts are in vain, i tried to reach customer care through email also but of no use

Please resolve this issue

I have a lot of client meetings, and they are unable to reach me bcz of this problem

My no is [protected]

Thanks