@Richardracer: Have you recently synced your Samsung account to a new device or are you finding that your events are simply not saving? Generally if you open the Calendar app, tap 'View' in the top right corner, select 'Month' and swipe right then you should be able to view each previous month with all events still intact. If this is not the case then I recommend tapping the 3 dots in the top right and hitting 'Sync Now' to see if you're able to return any previously saved data back into the app.
