How to Complain About a Postal Problem
When you have a problem with your mail service, complete a Consumer Service Card which is available from letter carriers and at post offices. This will help your postmaster respond to your problem. If you wish to telephone a complaint, a postal employee will fill out the card for you.
The Consumer Advocate represents consumers at the top management level in the Postal Service. If your postal problems cannot be solved by your local post office, then write to the Consumer Advocate. His staff stands ready to serve you.
Write to: The Consumer Advocate, U.S. Postal Service, Washington, D.C. 20260-6320. Or phone: 1-202-268-2284.