So in my case, the other day when the technician visited my house, he showed me a WhatsApp message with the details of the static IP allocation. Surprisingly it had a date of March 1, 2023.
SR submitted on the Airtel app - Feb 27, 2023
Callback confirming static IP request - Feb 28, 2023
Static IP address allocation (based on details learned on March 8) - March 1, 2023
First scheduled technician visit - March 2, 2023
2nd technician visit post escalation - March 8, 2023
It appears, the internal processes seem more or less streamlined, it's just the lack of training given to the technician. Once the static IP address was allocated on March 1, 2023, the workflow automatically scheduled a technician visit, but the technician had not clue what needed to be done. So in my case above, the entire process should have been complete by March 2nd.
When it comes to training, the technicians catering to home users very very rarely get a task to configure static IP address, which can explain the lack of training or awareness.