Contact Bank One Customer Service

Contacting Bank One Customer Service Center

Bank One merged with Chase in 2004, but there are still pages from the Bank One customer service website live online. We’re not sure if all the Bank One locations have undergone a makeover to the Chase logos in the past eight years or if the company chose to keep the Bank One branch of the business as is. In the FAQs section we see Chase mentioning the official website for Bank One so customers can learn more about the bank, but when we visit the URL we are redirected back to the Chase website.

to leave a comment about your customer service experience.

Contact Info:

There is no longer a Bank One customer service department, so we’ve added the Chase customer service information for customer convenience.

Phone Contact Numbers

We’ve listed some of the most common Chase or Bank One customer service phone numbers available.

  • Online Banking: 1-877-242-7372
  • International Online Banking: 1-713-262-3300
  • TDD: 1-866-443-0910
  • TTY or TDD Machines: 1-800-242-7383
  • Military Banking: 1-877-469-0110
  • Overseas Military Banking: 1-318-340-3308
  • Overseas TDD: 1-800-582-0542
  • Credit Cards: 1-800-432-3117
  • Personal Banking: 1-800-935-9935
  • Auto Loans: 1-800-336-6675

Open from 8 AM to 10 PM Monday to Friday and 9 AM to 5:30 PM Saturday (ET).

  • Home Equity: 1-800-836-5656

Open from 8 AM to 12 AM Monday to Friday and 8 AM to 8 PM Saturday (ET).

  • Mortgages: 1-800-848-9136

Open from 8 AM to 12 AM Monday to Friday and 8 AM to 8 PM Saturday (ET).

Mailing Address

Chase BankAttn: Bank One Customer ServicePO Box 36520Louisville, KY 40233


Chase BankAttn: Bank One Customer ServiceMail Code: KY1-09006714 Grade Lane Bldg 8Ste 807Louisville, KY 40213

Official Website

The Bank One site at just redirects to the Chase Bank website. If you’re interested in customer service or finding out more about the merger, you’ll need to contact Chase Bank not Bank One.

If you have a Twitter account, you can tweet to @ChaseSupport for additional customer service help.

Customer Service Email

The only remaining Bank One customer service page we could find was an email form at We are testing the email form to see if anyone will respond if a customer sends a message to the service department. When sending emails to a bank customer service department, no matter the bank, never send complete financial information like credit card, debit card or account numbers and don’t include your full social security number. Are clicking the send button the form took forever to send so it could be a dead form.

Our Experience

Contacting a financial institution can potentially be a challenge, considering the various departments and the subsequent customer service centers. But when we contacted bank One, we reached the correct customer service department the first time. The agent was pleasant and willing to assist. We asked the agent if there were payment assistance programs in place for loan customers behind on their payments. The agent provided the following services: interest-free payment, low-interest payment, reduced payment and interest-only payment. The agent recommends contacting the customer support team prior to a late payment.

Do have a customer service story to get off your chest about Bank One? Shout out below.

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2 Comments on “Contact Bank One Customer Service
  1. Why am I keep getting these letters saying I owe bank one money and the vehicle that went through the bank on them they Gonerched my pay check weekly to get the amount repaid back to them and now they still report it on my ex wife credit report saying she have to pay it and on my credit report as well the amount is paid in full why are they still asking for more and more money the vehicle was nothing but 9 thousands dollars which I have receipts and check stubs saying they goerg my wages what is up with Bank One like this? Why are they are doing this and the creditor asking me for more money on this?????????what can I do to stop them from making both my credit and ex wife credit bad????

  2. Have been getting two phone calls per day for the last two years from them regarding â„¢eligibility for credit”. No matter what I do in response to these calls they continue. Life in the modern world I guess!

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