Airtel — duplicate sim card not activating even after multiple attempts

Address:

Bangalore, Karnataka, 560100

This is for airtel post paid number [protected]. Our alternate contact number is [protected].
Problem: i have duplicate sim (Because my old sim is lost). After verifying the biometric the store staff told it will get activated in 4 hours. Even after waiting another day it was not activated. We contacted the customer care but but only to be advised to visit the store again. We visited multiple times still problem not solved. We got another sim from ananthnagar store, again it was not activated, we have given paper based (Aadhar copy and photo), still not activated. It's been 14 days since we gave the first request and changed multiple sims, and visited store multiple times and called customer care multiple times. Still problem not rectified. Raised 2 complaints with complaint number [protected].
I am very frustrated and mentally very disturbed by this.