Their firm started SPAMMING me at an address which I would NEVER use to sign up for marketing with.

What is in common between this record and the prior? The same person is doing marketing for two different brands. Well to be fair, the spammed brands both have the same mailing address. They started a couple of years prior, I unsubbed from the list, and prompty added a block for the ad ISP. They changed adhosts. No affiliation with Harris Ranch, the beef company.