Delayed Luggage by KLM Airlines

I arrived from KLM Airlines on June 30 to Dallas, TX. I got a receipt for delayed luggage on June 30, since last 7 days I have been calling them and no one returns calls, I called their number 800-745-9798 and all they say is they have sent a message. Its ridiculous that they dont have any sensible reply for me and dont have a clue of the exact status. And since Dallas is my hometown, they say I am not eligible to get any allowance money even though its been 7 days since I have been waiting. Absolute pathetic service.