You can get rid of Facebook Messenger calls in many ways first and the easiest way is to block all the notifications from Messenger from the settings of your device. If you want to block the calls from a particular person or profile then you can mute the notification of the particular person to block call notification. Learn the steps in details from the Link: https://ityug247.com/how-to-turn-off-call-on-facebook-page-messenger/