Airtel — Not receiving OTP 2021

Date : 08.03.2021
From morning facing issue in receiving OTP from web based services like Ajio.com, Myntra.com etc on my airtel number. Called help desk multiple times, they had only one answer "Everything is fine from network end'
After trying so hard to make them understand, they agreed that issue exists at server and their technical team is working since morning to fix it.
Now the question is being so advertised as fastest network, does their technical team is unable fix the issue with less time, ok atleast within 8 hrs?
Its more than 12 hrs passed now with no updates.
Disgusting!!