It finally happened. I'm pissed at Apple. Rash of spam iCalendar black friday invites over the last 48 hours. You CAN'T delete these without notifying the spammer you are a live account, and no way to block the sender. There's like 9 different solutions on Apple's forums, none have worked since I was dumb enough to decline it from my phone whilst walking the dog. Last option left unless they patch it, is to delete the iCloud account entirely. I bet Steve Jobs would have fixed this sooner.