Customer Service

Looking for ordering instructions?

Questions about the online bookstore?

Contact us at 1-888-286-8230

Questions about financial aid book vouchers?

Contact DU at 1-800-266-6158 or

Questions about course registration or the My Courses page?

Contact your advisor for assistance

Questions about technical issues?

Contact the DU Customer Support Center (CSC) at x1200, or 1-877-899-1499

Questions about a marketplace order?

Click here to email your seller directly for the fastest response.

Learn more about the Marketplace here.

Need to contact the Online Bookstore customer service department?

Standard Email

Best way to contact us - we answer emails quickly!

Toll-Free Phone

We have customer service agents available to help from 9am to 5pm EST, Monday through Friday, with additional hours on Saturday and weeknights during the back-to-school season.