AxisDenied

I am only in my personal group on SL, but in the past I joined an event group. I've left that group months ago, yet I am still receiving emails about different events they have going on. I am not receiving any in-game notifications at all, only emails. In the email notification, at the bottom it includes: To stop receiving these emails, login to https://accounts.secondlife.com/change_email/ and uncheck "I would like to receive offline IMs via Email" -- well it's been unchecked the entire time. Even in the email settings I am unsubscribed from receiving subscription emails. Thankfully the email I use for SL isn't my primary email... but I'm getting tired of deleting the 4-5 notices a day that come from this group. I'm half attempted to join the group again, and then leave just to see if that works/helps, but the joining fee is L$500... please please give me any insight into this, thx!