static void Main(string[] args)
{
Central c = new Central("Movistar");
Local l1 = new Local("011", 30, "56216544", 2.65f);
Provincial l2 = new Provincial("351", Provincial.Franja.Cordoba, 21, "52166452");
Provincial l3 = new Provincial("261", Provincial.Franja.Mendoza, 44, "43921062");
Provincial l4 = new Provincial(Provincial.Franja.Jujuy, l2);
c += l1;
c += l2;
c += l3;
c += l4;
c.OrdenarLlamadas();
Console.WriteLine(c.ToString());
Console.ReadKey();
}