Webmail Spam-mail

Can anyone shed light on the fact why Webmail persists with spamming their own subscribers even after opt-out?

3 Dec 2002

I know it is a free service but in 6 months I have been spammed 7 ways by their partners (Castle is a big culprit) and increasingly by entities I've never heard of. And even after trying to opt-out and expressing my dismay to Webmail, all I get is a mail that says that I have to live with it.