Event reminders going to people who rsvp’d no

Event invites/ reminders are going out multiple times and are going to people who rsvpd as no.
We have a camp out on 11/3. I got an email on 9/30, 10/4, and 10/5. I set my rsvp as no after the first email invited. Is this a TT issue? Or do we have a setting marked wrong? When I create an event I see the option to send the invite once but not multiple times. So why is this happening Help!

We have this happen to us occasionally as well! Curious to know the answer to it too!

We are also getting multiple invites from events that have been designated as only one.