Indigo Airlines — Abusive behaviour by co-passenger

My PNR N1WC8J... Bombay - Bangalore flight on 6th Dec 24. 01.00 AM flight.
my seat no was 20D. The person sitting in 20E was playing a video game without head phones. when i requested him to use head phone as the music from the game was disturbing me, he was rude and started abusing me. When i drew the attention of the crew, they also tried but to no avail. They offered me and alternate seat and resolved the issue.
What is the code of conduct for using mobile phones like this? Why the crew was not trying to discipline the mis having passenger.
Please sensitize the crew and monitor the passenger as he appeared to be a regular traveler with you. You must be having the details of the passenger.
Please do not make other passengers to go through such agony