AsyncTask.execute() runs callback after onDestroy is called

I am saving data on onPause method to SQLite database.

• I call myObject.saveEntry(data).
• It saves data by calling AsyncTask.execute(new Runnable(){})
• Once data is saved, the callback method savedSuccess(message) is called
• An Activity method showMessage(message) is called
• A toast is shown saying the data is saved successfully

My doubt is on how to handle the orientation changes. When the orientation changes,

• onPause is called and saveEntry method is called.
• After that onDestroy is called
• A new instance of the Activity is created again.
• The savedSuccess(message) method callback gets executed now (which was called from the previous instance of the Activity)
• showMessage(message) is called and toast is shown

My questions are

1. Should I stop the AsyncTask from executing in the onDestroy method
2. If not, how should I handle such situations when Activity gets destroyed before the database save/update/delete is complete?