Notification from FaceTime won't disappear! I have a notification on my MacBook that won't disappear.

My FaceTime app has a notification that wont disappear without me going into settings and clicking the badge icon. I want to delete the notification, not disable the badge icon, yet nothing works.

I've tried deleting all the recent and missed calls on my app and restarting it. It's not found in the Notification Center on the right (which opens when you click the 3 bars icon in the top right corner of the Menu Bar).

What do I do?
What fixed it for me was to open up FaceTime and simply Quit out of it.