RDI customer service is ready to help with any questions, comments, or concerns. Feel free to contact us by any of the following methods provided below. We are available Monday – Friday: 8 AM to 4PM Central Standard Time. If you are calling outside of normal business hours, feel free to leave a message to the appropriate department. Remember to leave a name, phone number or an email address so that we may respond back to you. You’ll be hearing from us soon!