Airtel — Prepaid SIM SMS not receiving

Dear Team,

I have been raising this concern from past two weeks that I am NOT receiving SMS on my number.
I’m able to send SMS, call/receive.

I had postpaid service earlier and ported it to prepaid some 5-6 weeks ago.
First two weeks after porting, it worked fine, then the issue with incoming SMS started.

I even changed my mobile device, changed my SIM, talked to customer support, but still no help.
Simply passed the ball to other court, saying issue with the sender!

I request you to kindly assist with this issue on priority. You know how important is today’s world to receive SMS as everything is now connected to phone number.

Regards
Ankit