In a system for providing customers with information assistance services, records are generated to register service events. In prior art, all of the records are transmitted to a billing platform for billing customers for the services. When a customer requests credit for an unsatisfactory service, the credit issuance is traditionally handled at the billing platform. However, in accordance with the invention, the credit issuance is handled by first identifying, from the records, those records of service events for which the credit is requested. All of the records, except the identified records, are then transmitted to the billing platform for completion of the billing process, thereby effecting the credit issuance.