Citadel Home Company Markets Products Customer Care Contact TEL: (603) 672-5500 Have a technical issue or question? We're here to help, so please reach out and let us dig in. Our dedicated team can be reached by phone, email or the web-form below. We respond to all support requests promptly -- the same business day. Our normal business hours are 8:30 AM to 5 PM Eastern Time, Monday through Friday. Our phone numbers: TEL: (603) 672-5500 FAX: (603) 672-5590 Our email addresses: sales@citadelcomputer.com support@citadelcomputer.com Our mail / shipping address: Citadel Computer Corporation 16 Columbia Drive Amherst, NH 03031-2304 USA RMA Service / Support Request Name First Last Email Phone Number Company Location Serial Number (if applicable) How can we help? Citadel Computer Corporation - © 2019 All rights reserved. Contact Us Travel Directions Privacy Statement