Phone : 888-650-7004 Fax : 888-743-5797 email : support@chexexpress.com regular mail : P.O.Box 59830 • Chicago, IL • 60659 shipping address : 1900 North Austin Avenue • Chicago, IL • 60639 Our business hours are usually from about 8:00 AM to 6:00 PM (Central Time) weekdays, but we are often available well past those hours and on weekends. We try and answer all phone calls but do get backed up during the day and then often can't get to you until after our UPS pick-up late in the day. Please leave your number - we will get back to you.