| 摘要 |
The invention provides methods, systems and apparatus for combining aspects of a prepay and post pay utility service billing arrangement. When a customer enrolls in the program with the system, utility service is initiated and a first bill is generated and transmitted; the amount of the first bill is an estimated amount of charges for the service to be provided during a first period. In subsequent billing periods, subsequent bills are generated and transmitted and each includes an estimated amount of charges for the subsequent period as well as a difference between actual and estimated charges for the service during the previous billing period, less any payments received from the customer. Service may be terminated if the customer withdraws from the program, if the customer fails to make timely payments, or for other reasons. If service is terminated, a final bill may be generated and transmitted based on actual charges, net of any amounts
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