You may contact customer service at 1-855-375-9860 or via email at [email protected]. If you have already contacted Customer Service in an attempt to resolve an issue or concern and still need additional assistance, please contact the Wakpamni Lake Community Consumer Complaint Tribe Hotline at 1-800-677-3860 between the hours of 9 AM and 5 PM MST Monday through Friday. If you would like a copy of the Tribal Credit Code of the Wakpamni Lake Community Corporation of the Oglala Sioux Tribe, please email us at [email protected].