You could write to them, but let me save you the hassle.
"Dear Mr. Chonchord
Thank you for your letter to our CEO dated December 2010 where you complained about our lack of service on your flight.
Qatar Airways always endeavors to ensure the highest level of quality possible for our Privilege customers and we regret that on this day that we did not meet your expectations.
Yours Sincerely
Pravindar Singh
Customer Service Supervisor Unit Section Middle East"
Because that is all you will get after about four weeks.