Due to scheduled maintenance our mobile app, online banking, online account opening, and Zelle transfers will be unavailable Saturday, November 23, from 11:00 pm through Sunday, November 24, 7:00 am (MST). Debit Cards will have an offline limit of $750 during this time. We apologize for any inconvenience.
Contact Us
We love talking to members!
There are several ways you can reach us.
Phone
In Person
If you prefer to talk to someone in person, stop by any of our branch locations and we'll be ready to answer your questions! We do what's right, not what is easy.
Schedule An Appointment
Life gets busy, we get it! You can schedule an appointment with a Financial Coach, Financial Advisor, Mortgage Mentor, and more to ensure all your banking needs are met!
Regular Business Hours
All hours of operation listed below are in the Mountain Time Zone (MT).
Monday, Tuesday, Thursday, Friday: 9:00 am - 5:00 pm
Wednesday: 10:00 am - 5:00 pm
Saturday: 9:00 am - noon
Sunday: Closed
Holiday Closures
2024
New Year's Day
January 1
Martin Luther King, Jr. Day
January 15
President's Day
February 19
Memorial Day
May 27
Juneteenth
June 19
Independence Day
July 4
Labor Day
September 2
Columbus Day
October 14
Veteran's Day
November 11
Thanksgiving Day
November 28
*Black Friday
November 29
Christmas Day
December 25
*Holiday hours for Air Force Academy branch only
Important Numbers
Debit Card Service Numbers
Please call 866.820.9793 as soon as possible to report a lost or stolen debit card, to dispute a charge, or to report fraud.
Lost or Stolen
866.820.9793
International Cardholders 727.299.2449
Report Fraud
866.820.9793
International Cardholders 727.299.2449
Change PIN
Dispute a Charge
Credit Card Service Numbers & Resources 1
Please call 719.593.8600 or 800.223.1983 as soon as possible to report a lost or stolen credit card.
Report Card as Lost or Stolen - Cardmember Service
For questions about your account or to report a Lost or Stolen Credit Card, call 24-Hour Cardmember Service at 800.558.3424.
Please note: Lost or stolen credit cards cannot be reported on aacu.com
Technical Support
Call 877.334.0460 for any of the following concerns or technical issues:
- Internet browser configuration
- Technical support
- Issues with online account access
Credit Card Payments
Send a Payment
Cardmember Service
P.O. Box 790408
St. Louis, MO 63179-0408
Send an Overnight Payment
Cardmember Service
824 N 11th Street
St. Louis, MO 63101-1016
Business Visa® Debit Card Disputes
In the event you have an unauthorized transaction on your Business Visa Debit Card, call 719.593.8600 or 800.223.1983 us as soon as possible to dispute a charge
Email Us
Positive Stories
Your stories mean the world to us. Don't hesitate—share your story with us!
This form is for general inquiries only.
Please do not include information such as account numbers, PIN numbers, Social Security Numbers, or other sensitive information.
You will receive a response within 2 business days.
For immediate assistance, please call 719.593.8600 or 800.223.1983.
Have a Complaint?
Your happiness is important to us and we take complaints seriously. We will investigate and resolve any and all complaints in a timely manner. There are several ways you can submit a complaint, click on the link below for details.