How do I stop spam calendar events on my Mac.
In the last few months I've been getting spam calendar events on my Mac's calendar. How I've handled it so far is to create a spam calendar and change the events to spam. they change colour and once a week or so I just delete the spam calendar and start another one. How do I stop these spam events from getting into my calendar. They appear as greyed out events and are very annoying and clutter up the calendar. All my iCloud calendars are correct so there isn't anything to delete there. I can't find anything anywhere on how to deal with this other than statements that apple needs to help stop this. Thanks in advance for any help.
Earlier Mac models
