Air India — Lost baggage, compensation required

I traveled to India in January 4th 23 with air India. Air india lost mu duitcase.
I let them know stright away. My case number is: 19388871.
I have requested a refund of all my lost personal belongings and clothes.
I also neded a refund in the clothes that I had to buy as I had nothing to wear.
I have been trying to contact air India by email as the person at the end of the phone to air India request me to use email.
You have all my details, Please resolve my claim urgently.
DOT regulations say that airlines are required to compensate passengers if their bags are lost, 04/1/23,
You owe me Two and a half thousand pounds.
l.[protected]@yahoo.com