Airtel — sim change not activated even after 144 hours!!!

Address:

560043

Step 1 - applied for a sim change on 01 may 2018, the sla was 48 hours for activation but the store representative promised lesser time.
Step 2 - post 48 hours the sim was not active, called up 121 and registered a complaint and was given another 48 hours time line, with promises from the manager that this will be high priority.
Step 3 - sim still was not active post the 56 hours time line, called 121 and they stated my complaint was "closed" as resolved.
Question a. Is are airtel shutting down?
Question b. Is it just balant disregard to thier customers?
Question c. They have no clue to whats happening?

Highly frustrating talking to thier customer care and the phrase "sorry" can be heard every second in the conversation!!!