Xamarin Forms Background delegate being called - xamarin.android

Question

I am currently using the connectivity plugin to detect network status. What I am trying to do is when I want to send data and the device is offline I start a background task using the messaging service and respective platform specific code as shown here.
The problem I am having is the Android service has a callback that continues being called even after I have stopped the service. The code below assigns a delegate to CrossConnectivity.Current.ConnectivityChanged and should stop the service after it sends the required data when network connection is restored.
public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId)
{
...
Task.Run(() =>
{
CrossConnectivity.Current.ConnectivityChanged += delegate
{
if (CrossConnectivity.Current.IsConnected)
{
if (!App.ServerManager.IsUserLoggedIn())
App.ServerManager.LoginUserAsync(Constants.__User);
//send our data
foreach (SampleItem s in sList)
{
try
{
//query to see if it exists on the server
App.ServerManager.GetSamplesAsync();
Task t = App.ServerManager.SaveSampleAsync(s);
}
catch (Exception e)
{
Console.WriteLine(#" ERROR {0}", e.Message);
}
}
// Instantiate the builder and set notification elements:
Notification.Builder builder = new Notification.Builder(this)
.SetContentTitle("Jarver Industries")
.SetContentText("Samples Successfuly Sent!")
.SetDefaults(NotificationDefaults.Sound)
.SetSmallIcon(Resource.Drawable.banner);
// Build the notification:
Notification notification = builder.Build();
// Get the notification manager:
NotificationManager notificationManager =
GetSystemService(Context.NotificationService) as NotificationManager;
// Publish the notification:
const int notificationId = 19900203;
notificationManager.Notify(notificationId, notification);
MessagingCenter.Send<BackgroundDataFinishedMessage>(this, "Done");
StopSelf();
}
};
});
return StartCommandResult.Sticky;
}
I am sure I am doing something wrong on a .NET level, but I am unsure what alternatives there are.