I'll let you know what CS say but it doesn't seem very promising given what they've said to you! I get emails telling me what my beauty drop credit but that's it. I used to get the promotion emails but oddly I don't anymore. I also don't get general Liberty ones either, even though I am subscribed to those as well. The emails are not going into my spam and the email address is not on my blocked contacts so I'm not sure why I'm not receiving them.
Given that there seems to be a problem with some accounts, they could at least make the edits visible to Beauty Drop members when they log into the Liberty website so that we don't have to ask people for a link.