The Consumer Action Handbook is a free resource guide that provides general information on shopping for goods and services and tips about your consumer rights. The Handbook has information to help you file a complaint about a purchase and includes a sample complaint letter that you can use and send to a company. It also includes a consumer assistance directory, with contact information for consumer protection offices in government agencies, and customer service departments at many national corporations.
You can get a free copy of the Consumer Action Handbook:
There is also a Spanish version of the Handbook, Guía del Consumidor to provide consumer information to Spanish consumers. You can download a pdf of the Guía.
Please note: The information in the Consumer Action Handbook and Guía del Consumidor are in the public domain, so you may copy any portion of these books. Credit USAGov in the Technology Transformation Service, General Services Administration as your source.