Airtel — Not able to receive SMS after prepaid pack validity expired

My Airtel prepaid connection validity expired on 5th June 2026 midnight. I missed to recharge in 6th June. When I tried to recharge on 7th June using Airtel thanks app, I didn't receive OTP from the bank since my incoming calls and SMS is blocked. I never expected that incoming blocks within grace period of 15 days (referred Airtel website blog post).
TRAI should take necessary action on behalf of the consumers.
Raised a complaint throught customer service and yet to receive a resolution. Please let's raise our voice against this pathetic service from Airtel. Consumers should be given longer grace periods and incoming should never be blocked.a