Check Netflix's website. Their Help and Customer Service help resolve problems with your DVD and other common questions. Type the question into their FAQ at netflix.com to see if the information resolves your problem.
Call Netflix. The main customer service number is 1-866-716-0414. The customer service representatives are available 24 hours a day to help resolve issues.
Send a letter to the following mailing address:
Netflix, Inc.
100 Winchester Circle
Los Gatos, California 95032
This sends mail directly to Netflix's main headquarters.