Call blocking with "this number disconnected" message?

[GerGa]

Hi, I have a galaxy s4 with 4.4.2 and need a new call blocker app. I have one called Mr. Number which blocks calls and texts. I have it set to hangup on this one phone number every time they call so they can't leave a message. It also hides & discards all texts from that person as well. The thing I don't like about this is that it looks like I am actually hanging up on the blocked caller.
I would much rather it give a message to blocked numbers that says that this number is disconnected. Then the blocked caller will actually think they have the wrong number.
Does such an app exist?

Thanks