Creating a Window Service that would detect if a pc/server was shutdown and send a text message. Not working

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C#

Windows

C#4.0

service

Hi all,

I have this window service created in c#4.0 .net and using the api of twilio.
this will send a text message to my phone if a server was shutdown.
after i installed the service and tried to shutdown my pc but nothing happens.
I am not receiving any text at all.

protected override void OnStart(string[] args)
{
    SystemEvents.SessionEnding += OnSessionEnding;
    SystemEvents.SessionEnded += OnSessionEnded;
    eventLog1.WriteEntry("starting");
}

protected override void OnStop()
{
    SystemEvents.SessionEnding -= OnSessionEnding;
    SystemEvents.SessionEnded -= OnSessionEnded;

    eventLog1.WriteEntry("stopping");
}


protected static void OnSessionEnding(Object sender, SessionEndingEventArgs e)
{
    if (e.Reason == SessionEndReasons.SystemShutdown)
    {

        string AccountSid = "[myaccount sid]";
        string AuthToken = "[auth_token]";

        var twil = new TwilioRestClient(AccountSid, AuthToken);

        var message = twil.SendMessage("[fromnumber]", "[tonumber]",         "Server shutting down'" + Environment.MachineName + "'");

        Console.WriteLine(message.Sid);

    }
}

protected static void OnSessionEnded(Object sender, SessionEndedEventArgs e)
{
    if (e.Reason == SessionEndReasons.SystemShutdown)
    {
        string AccountSid = "[myaccount sid]";
        string AuthToken = "[auth_token]";

        var twil = new TwilioRestClient(AccountSid, AuthToken);

        var message = twil.SendMessage("[fromnumber]", "[tonumber]", "Server has been shutdown '" + Environment.MachineName + "'");
        Console.WriteLine(message.Sid);

    }
}

please advise.. Thank you.