Notifications keep popping up in my Calendar and it won’t let me delete them

What do you mean it is connected by a link? Can you provide a screenshot to this box you see about subscribing? There shouldn't be anything in Settings to unsubscribe to the calendar. Again, this is either going to be a mail account, or something else like a profile that got into your iPhone. If you go to Settings>Passwords & Accounts, do you see a strange email account listed there? Or, if you go to Settings>General>Profiles, is there anything listed there?

Hi there, Fknkoza,

Thanks for visiting the Apple Support Communities. From your post, it looks like you're receiving some spam/junk Calendar invitations. I'm happy to help!

To resolve issues with unwanted junk/spam Calendar invites, you can head to iCloud.com on a computer web browser and report the events as junk: Report a junk calendar event invitation on iCloud.com - Apple Support. Once you've done this, the invites should be automatically removed.

Best.

Not really, however I noted a number of them in December. Seems that some are sending these through an email. I've read email accounts getting automatically added to iPhones, like some of those coupon groups, and some are subscribed, but I'm not sure how those are getting added. I've been watching to try and get more information on them to see how the subscribed calendars are getting added, but it seems to be progressing.

Thanks for following up Fknkoza,

Since the provided steps did not solve the issue, I'd recommend getting in touch with Apple Support directly. You can do that here: Contact Apple Support.

Best.

What happens when you un-check the obvious bogus “calender 1”?

Tap the (i) to the side, then delete that calendar.

Hi Chris. There seem to be quite a few of these bogus calendar issues popping up. Any idea as to the source of them?

You're welcome. Glad you were able to get it fixed.