LawCrossing.com spam king Internet, California

I cannot get these people to stop spamming my email daily with newsletters. The unsubscribe links (if you can find them) didn't work for me. I finally found ONE that linked me to a functioning webpage, but it said it would take 7 days to unsubscribe. Three weeks later, I am still getting almost-daily emails. I've sent multiple emails directly to lawcrossing's employees/executives pleading with them to take me off their  email list. No response. It appears other people are having the same experience, based on posts on this website and elsewhere on the internet. Why hasn't a government agency done anything about this yet?