System and method for verifying subscriber data records in a telephone system

A method for verifying record consistency, the method comprising:

• storing a new subscriber record into a subscriber list;
• sorting the subscriber list such that duplicate subscriber records are stored in consecutive record elements in the record list;
• and
• identifying a duplicate record in the record list wherein the duplicate record corresponds to at least one of the following:
• the subscriber being improperly billed and the subscriber receiving services inconsistent to what services were being billed to the subscriber.

A method for verifying record consistency, the method comprising:

• reading a new record of subscriber subscription data;
• comparing the new record of subscriber subscription data to each record of subscriber subscription data;
• and
• if no match is found when comparing the new record, reporting an error indicating that a customer is incorrectly classified in a classification that corresponds to at least one of the following:
• the customer being improperly billed and the customer receiving services inconsistent to what services were being billed to the customer.