How to block and report calendar event spam emails on iCloud Calendar?

okay I’m not sure how to block/report these emails because they change the email every single time. But essentially you get an alert saying an event/reminder on calendar needs you to accept/decline then you can click the event it says a spam message usually stating a billing subscription is due for something (usually with typos and if you’re smart you know you don’t even have a subscription to them) & then on the email it’s usually a fake email (for example my most recent one : ste******@ayacucho.edu.pe ) I can add them to my contact and then block the email that way but the stupid event still lies in my calendar. This is getting very annoying and obnoxious. I don’t think it’s fair that I have to go in my settings turn off all my alerts notifications etc and switch my calendars around because I can no longer use any of my email iCloud calendars due to this annoying spam!!!!! Does anyone know how to report or if we can get Apple to fix this annoying issue!!!??

[Edited by Moderator]

Original Title: CALENDAR EVENT SPAM