Block callers in FaceTime on Mac
If you don’t want to receive calls from someone, you can block them in FaceTime on your Mac. When a blocked caller calls, you’re not notified and the call isn’t answered.
Important: If you block a caller on your Mac, the caller is blocked on all your Apple devices where you’re signed in to the same Apple Account. See the Apple Support article Continuity features and requirements on Apple devices.
Go to the FaceTime app
on your Mac.Choose FaceTime > Settings, then click Blocked.
Click
, then select a name in the list of contacts.You can also Control-click a call in the call history, then click Block This Caller. (If you see Add to Contacts instead, click that option, click Create, then block the contact.)
To unblock a caller, choose FaceTime > Settings, then click Blocked. Select a name in the list, then click 
.
If you don’t want to receive any calls through FaceTime, sign out of FaceTime on each Apple device. See Sign into or out of FaceTime.
Tip: Another way to prevent unwanted callers from bothering you is to set up communication with your contacts only.