How to make a Complaint to USPS
Call the USPS on their complaint number in the first instance on 1-800-275-8777. If this does not resolve the issue for you, then you should write to the USPS via the online form on their website or by letter and proceed through their complaints handling process.
USPS complaint contacts like Phone, email and support form
Complaint via Phone number : 1-800-275-8777
The Complaint via Email : firstname.lastname@example.org
Complaint via Support Form : usps.com/help/contact-us.htm
USPS complaint website : usps.com
Corporate Head Office address
475 L’Enfant Plaza, S.W., Room 2P530,
Washington, DC 20260-0546
For any general inquiries, please contact USPS head office number : 202-268-3251
Hopefully, We helped you to get some genuine records for USPS Complaint information.