I've been here before
I didn't suggest this book for a read on Freemasonry. But it is a great introduction to esoteric study.
Hank, you are going to have to elaborate on your situation a little more. Are they emailing you offers? Digital copies of books? What? If you are getting mailings from forgottenbooks.org they should also contain a link to unsubscribe or you can go to the website and contact them to inform them that you do not want to be on that list.I don't remember signing up for any of this.