I too have unsubscribed several times with no reply. This is some sort of scam. 

Under review

Just to be clear. Do you want to unsubscribe from specific emails or do you want to close your accounts?

Please stop sending me emails. 

Is that not clear?  NO MORE EMAILS of any kind. 

I saw a number of posts complaining about not 

being able to unsubscribe so at least we know it’s not a one-off.  I did manage to get a s response from from “an editor “, so maybe I  will 

finally stop getting the 10-12 really long emails. 

Good Luck.