Contact Us
Sunflower Bank Headquarters
1400 16th St, Ste 250 | Denver, CO 80202
Customer Care Center
Available 8 AM-8PM (CT) Monday-Friday and 8AM-4PM (CT) Saturday
Call: 888.827.5564 | [email protected]
Assistance with: Personal Online Banking, Business Banking Direct, Account-related questions, etc.
Treasury Management Direct Client Support
Call: 833.377.8265 | [email protected]
CheckIt – Automated Phone Banking
Call: 800.552.2432
Credit Card & Debit Card Travel Notification
Traveling? Purchases not typical with your spending patterns may trigger fraud alerts for your protection. Call us in advance of any atypical travel or unusual purchase plans. If you are traveling internationally, beyond Canada and Mexico, you must notify us in advance if you intend to use your debit card.
Call: 888.827.5564
Report a Lost or Stolen Debit Card
Call: 800.472.3272
Mortgage Servicing
Request for Information or Notice of Errors must be sent to:
Customer Service
P.O. Box 833890
Richardson, TX 75083-3890
Call: 800.331.4799 | [email protected]
Guardian Mortgage, a division of Sunflower Bank, N.A.
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