This document shows the phone call records for 12 customers. It lists the number of local, national, and international minutes used by each customer along with the basic monthly fee of S/15 and excess minute rates of S/0.70 per local minute, S/1.00 per national minute, and S/2.00 per international minute. The total charges for each customer are calculated including the basic fee and charges for any excess minutes over the included amounts. The total charges for all customers is S/652.50.