I submitted both spams to spamcop and the appropriate abuse addresses would
have been notified in both cases. I got no response from either of my
submissions. As for a "reason for ignoring" my complaint I really couldn't
say since, well they ignored me.
Did you ever send a complaint to abuse@xxxxxxxxxxxx and
postmaster@xxxxxxxxxxxx personally (so that you could actually verify it
was sent and delivered)? I've never dealt with a company that didn't at
least acknowledge receipt of a complaint.
-Don