Nisource Customer Service Number

In this page, you can find Nisource customer service number and the address you can send mail to Nisource customer service. Nisource Customer Service Address is 801 East 86Th Avenue, Merrillville, IN, USA, 46410-6271. Customer service is operational on normal working ours and available on phone, live chat, and email.

What is Nisource Customer Service Number?

Nisource Customer Service Number is 219-647-5990

For requests, comments, inquiries, or messages, please use the form below (at the end of this page).

If you are looking for the best Nisource customer service number, please call the phone number above, and then follow the auto system that will then forward team member available from the Nisource customer service to assist you with your issue or inquiry. This Nisource customer service number is the fastest way to talk to customer service and you should use it.

What is Nisource Customer Service Address?

Nisource Customer Service

801 East 86Th Avenue

Merrillville

IN 46410-6271

USA

Due to the COVID-19 pandemic, companies are affected but this Nisource Customer Service Number is available for you within the same hours on normal days. Nisource Customer Service working hours and opening hours may change, depending for the IN state department of health instructions. Nisource customer service is working to keep the safely, health, and wellness of its employees but still makes sure you get fast response and high quality service.

The Nisource customer service number show above is the best number available and is completely free – you might be charged for the call by your phone service provider according to your active agreement. This Nisource customer service number and the team is available to help you with your issue during normal working hours and could be different hours on local and national official & public holidays.

Secrets Customer Service Employees Don’t Want You To Know

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Calling Customer Service website is working around the clock to find the best Nisource customer service number and information available for Nisource and other companies. If you have new information about Nisource customer service number to contribute to our amazing website, please write us on the form below or use the contact us page.

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