Air India — AI 382 - a case of missing pilots

Address:

Unit 0104 2 Cornwall Gardens Singapore 269632

I took flight AI382 from Delhi to Singapore yesterday. I was seated in Biz class 2F
The flight was delayed by over 5 hrs on the tarmac with POOR communication from rge Airlines and from the ground staff.
The pilots were nowhere to be seen.
How can Air India board passengers without the presence of any pilots?
Why was food not served to business class passengers for more than 4 hours
Why were passengers left stranded on the ground for more than 4 hours ( international max stranded time) against their Will.
Whilst the aircrew tried their best to communicate they were not being responded to to keep the passengers calm.