If you cannot get satisfaction from either the seller or manufacturer, contact your local consumer protection agencies. They may be able to help. Inquire about dispute resolution organizations. They arbitrate disagreements when both you and the company are willing to participate. The company or local consumer protection office can suggest organizations to contact.
Most states have small claims courts.
The costs are low, procedures are simple, and lawyers usually are not needed. The clerk of the small claims court can tell you how to bring your lawsuit and what the dollar limits are in your state. If none of these actions resolves your dispute, you may want to consider a lawsuit. The Magnuson-Moss Act allows you to sue for damages or for any other type of relief the court awards, including legal fees. A lawyer will be able to advise you whether to proceed with a lawsuit.