The telephone utility may provide for the arrangement of a deferred payment plan to enable a residential customer to make payment by installments where such customer is unable to pay the amount due for service. The deferred payment plan may require the affected customer to maintain his account current and pay not less than 1/6 of the outstanding balance for a period not to exceed six months. The outstanding balance may include the late payment charge authorized by R. 103-622.2. A deferred payment plan is any agreement to defer a payment to the next billing cycle.
S.C. Code Regs. § 103-622.5