A method includes determining whether a first amount of liability contributed by a first subscriber during a provision of a service to the first subscriber exceeds a first balance indicative of a first portion of available funding that may be consumed by the first subscriber, determining whether a second amount of liability contributed by a second subscriber during a provision of a service to the second subscriber exceeds a second balance indicative of a second portion of the available funding that may be consumed by the second subscriber, issuing a first communication to a device to affect the provision of a service to the first subscriber if the first amount of liability exceeds the first balance, and issuing a second communication to the device to affect the provision of a service to the second subscriber if the second amount of liability exceeds the second balance.