A classic example of a person loving to dish out personal insults, but when you push back he grows tired of such coming back his way. To which I say, never let up, always hammer them back and harder. And search engines are a wonderful tool to find previous lies and insults, long since forgotten by those who spew them on a minute by minute basis..
To which I say, never let them darken your door again . I've had a wonderful couple of months of peace.