My luggage has been at airport in jfk for 6 days

My luggage has been at airport in jfk for 6 days. Staff is rude and accused me of leaving my bag behind although I filed a complaint at airport with a staff member who confirmed by bag was missing, made me file a questionaire but ommited to give me a file number. Jfk staff has not answered to call for help despite us calling and contacting all the other qatar airways channels.