Contact Us
Let's Keep In Touch!
Phone
We love talking to members! Call us during regular business hours and we'll be happy to help!
Regular Business Hours:
Monday, Tuesday, Thursday, Friday: 9:00 am - 5:00 pm
Wednesday: 10:00 am - 5:00 pm
Saturday: 9:00 am - noon
Sunday: Closed
2023 Holiday Closures
2023
New Year's Day
January 2
Martin Luther King, Jr. Day
January 16
President's Day
February 20
Memorial Day
May 29
Juneteenth
June 19
Independence Day
July 4
Labor Day
September 4
Columbus Day
October 9
Veteran's Day
November 11
Thanksgiving Day
November 23
Christmas Day
December 25
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.
Virtually
Whether you're on a break from work or relaxing on the beach, you can still talk to a real, live person online through video banking!
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!
Email 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.
Important Numbers
Debit Card Service Numbers
Please call as soon as possible to report a lost or stolen debit card, to dispute a charge, or to report fraud.
Lost or Stolen
719.593.8600
800.223.1983
After Business Hours
833.933.1681
International Cardholders
812.647.9794
Report Fraud
719.593.8600
800.223.1983
After Business Hours
866.279.1399
International Cardholders
727.227.2447
Change PIN
719.593.8600
800.223.1983
After Business Hours
833.580.2614
International Cardholder
833.580.2614
Credit Card Service Numbers & Resources 1
Please call 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 Debit Mastercard® Disputes
In the event you have an unauthorized transaction on your Business Debit Mastercard, call us as soon as possible to dispute a charge
719.593.8600
800.223.1983
After Business Hours
866.279.1399