25 CFR §175.315

1. (a)If you do not pay your bill prior to the close of business on the due date, your bill will be past due.
2. (b)If your bill is past due we may:
   1. (1)Disconnect your service; and
   2. (2)Not reconnect your service until your bill, including any applicable fees, is paid in full.
3. (c)Specific regulations regarding non-payment can be found in 25 CFR 143.5(c).