My experience is that he ignores feedback. So I don't care, and never contacted him again.
I replied to your mail sent in August pretty quickly, but it bounced (spam filter or something) and I couldn't find any other email address on short notice, so I gave up. I didn't know that you had an account here either...
But yes, there are in fact some emails I don't reply to, but in this case, I at least tried.