Johnson Lifts — Delay in Lift Installation

Booked a unit in Habitat Iluminar, Mysore Road, Bangalore, builder promised to provide the possession by May 2022. Earlier it got delayed due to the strike issue from Johnson Lifts employees, after that the builder promised lift will run within 20 days on 26th May 2022. Now the lift installed manually in my tower i.e. 5th tower, if I ask the team when it will be automatically work they say another 20 working days.
I am unsure why such a renowned company who has a thousands of employees taking lot of time to install the lifts in the apartment. Due to the lift issue, I am unable to shift my family and sure there must be many like me who is suffering due to this issue.
This is an unacceptable behavior from the company and its employees.