Any call blocking app with busy tone?

[TheNerd]

Hi

Is there a call blocking tone that sends to the caller a busy tone (like I'm during a call)?

Sent from my A0001 using Tapatalk

 

[paul222008]

+1

Sent from my A0001 using Tapatalk

 

[Heland]

1. TrueCaller
This is the best app dealing with scam call. You can check if incoming call is scam/spam or not, blacklist it and caller only get busy signal.
Google Play
apk
2. Mr. Number-Block calls & spam
Google Play
apk
3. Calls Blacklist - Call Blocker
I'm using this, very nice:
Google Play
apk