Unsolicited SPAM that they will not STOP!

I have repeatedly asked to be unsubscribed from their mailing list, more times than I can even remember, and it may stop for a while.... but then I get mail from them (***) again - 2 emails in the last 2 days (and to 2 of my email addresses, so I got 4) which I have not signed up for! I have even previously clicked unsubscribe, and then having their system say that my email address doesn't exist on their mailing system... to then getting email the next day (this was a previous time) from that address! I have tried all I can to politely stop this, as I know everyone needs the money/work, but I have had to resort to this now. So *** - LEAVE ME ALONE!