Members getting email even though they are not signed up
User A keeps getting emails for things that are uploaded to Gallery A.
I have logged into their account, and looked myself, and they are indeed NOT subscribed to any gallery for email notifications. It's a very pretty busy gallery that they are getting the email notifications from.
What is the best way for me to take care of this? I don't know the table structure well enough to go mucking around in there without some direction on what to look for.