File a Complaint against NiSource
Does your complaint qualify?
Business Headquarters Location
address:
10846 S. State Line Rd.,
New Middleton, OH 44442
phone number:
(330) 542-9303If you have any questions or concerns, please contact the BBB assigned to your complaint:
contact BBB of Mahoning Valley
address:
201 East Commerce St.
Suite 137
Youngstown, OH 44503
phone number:
(330) 744-3111