25 C.F.R. § 175.320 – What will happen if my service is disconnected and my account remains delinquent?

(a) If your service has been disconnected and you still have an outstanding balance, we will assess you interest, penalties, and administrative costs in accordance with 31 CFR 901.9.
(b) We must forward your delinquent balance to the United States Treasury if it is not paid within 180 days after the original due date in accordance with 31 CFR 901.1.