We appreciate hearing from you and are always available to answer questions or provide information. Please feel free to contact us in the way most convenient for you. By Mail: 100 East Main Street PO Box 157
Black River Falls, WI 54615 By Phone: 715-284-5333 or 800-258-0023By Fax: 715-284-5112Via Email
Please note that emails are not secure transmissions so please do not send account numbers, social security numbers or any other information you would like to keep private to Co-op Credit Union or anyone else in an email message. Thanks.
Lost/Stolen Phone Numbers for Credit and Debit Cards:
Lost/Stolen MasterCard Hotline:
24 Hours in US: (800) 808-7230
Worldwide: (727) 570-4881 Good only 7:00 am to 5:00 pm Monday - Friday US Eastern time. No long distance charge.
24 Hour Worldwide Customer Service: (608) 836-2613
Lost/Stolen Debit/ATM Card Hotline:
Please call Co-op Credit Union during normal business hours.
After Hours/Weekends: (800) 554-8969
Some countries do allow toll free calls to this phone number, some do not. If your attempt fails, and it's after credit union hours, the recommended solution is phoning a family member or trusted friend stateside to report the lost or stolen card.
You also can contact us by entering your information and message below:
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