I was just about to check out a refund (and no,I don't do that often, only a few times EVER) when i decided to be able to again at the ads that made me bite on the offer.
A quick "thanks, but no thanks" note is so much better than no reply at many. https://www.Zanichelli.it/login/zd-login.php?zanitTargetUrl=aHR0cHM6Ly9TaXRlcy5nb29nbGUuY29tL3ZpZXcvbHVtaW5hZ3JhbmRzaG93ZmxhdC9ob21l