Welcome to Customer Service

Here you will find answers to your questions about shopping at our online store, your order, payment options and more. Simply select from the categories below for complete information.

Managing Your Account

It’s easy to change and update your account information online at any time; simply click Sign In to access your account. If you have forgotten your password, simply click Forgot Your Password? on the Sign In page. Please note that if you have just placed an order with theory.com, it may take up to 24 hours for your order to appear in your Order History. If you can’t find your order, please check back later.