static void Main(string[] args)
    {
        // Find your Account Sid and Auth Token at twilio.com/user/account
        string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
        string AuthToken = "your_auth_token";
        var twilio = new TwilioRestClient(AccountSid, AuthToken);

        var records = twilio.ListUsage(null, null, null, null, null, null);

        foreach (var record in records.UsageRecords)
        {
          Console.WriteLine(record.Count);
        }
    }
    static void Main(string[] args)
    {
        // Find your Account Sid and Auth Token at twilio.com/user/account
        string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
        string AuthToken = "your_auth_token";
        var twilio = new TwilioRestClient(AccountSid, AuthToken);

        var records = twilio.ListUsage("calls-inbound", "Daily", new DateTime(2012, 09, 01), new DateTime(2012, 09, 30), null, null);

        foreach (var record in records.UsageRecords)
        {
          Console.WriteLine(record.Price);
        }
    }