Airtel — Prepaid SIM registration failed

My prepaid Airtel no:[protected]

I have 3 days left on my pack and yet the sim is showing no service available .
It shows i have data on the AIRTEL APP but I cannot use it and their is no /servi/ce. It was all fine till 15/07/2020. But t has stopped since then. My expiry is on 18/07/2020.
On enquiry with general population, I found out that is a systematic behaviour by Airtel and it keeps shutting down random sims (my friends faced this too) . Then we go to airtel office near us and then they give us a new SIM for a charge of 25/- .

So has Airtel stooped so low ? You need to make revenue off our leftover data and take 25/- for marginalising profits. It is really diffcult for us now as we are in lockdown and also I cannot make and recieve calls.