Air India — missing suitcase and terrible service

I was flying with air india from tlv to bangaloure with a stop in delhi.
When taking off from tlv i made sure the suitcase will get all the way to bangaloure.
The flight attended assure that it will happen.

When arriving to bangaloure i see that my suitcase has not arrived. At first there was a girl who told me that the suitcase will come to the hotel and that she will check regarding compensation as j am on a business trip.
Than we went to the office to fill the report and a very rude guy, name irshad ahmed, disregards everything she told me.

According to him it is my fault i did not picked up the luggage and went through clearance (I had no clue i needed to do so). I need to loose a working day and to go to the airport in mysore to collect my baggage and there is no compensation.

He was taking so surly not ready to listen to anything i said!!!

Please explain why do i need to loose money for buying necessary things and loose working time, which is obviously very expansive as i am here on a business trip, due to your mistakes???!!!

I am a business woman who is travelling often around the world. I have never experienced such a humiliating service.

I hope you will find your way to compensate me for the financial lost, like every respectful airline around the globe.