Black listed Application for WM?

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Is there any Developed application For Blocking unwanted calls or drop call?

Specially The functionality included,

1) By number or by Address book NAME.
2) Instead receive the call and and Auto TONE OF VOICE dialog says
something like
"Sorry, U have been block".
Without any ringing or notice to me.

Lots of peoples are facing lots of unknown calls from unknown user just to disrupt him/her.
Lots of missed calls at night are a regular bother to someone at this time.

Sorry if I ask this in wrong thread.

Tuhin that u TISL Tuhin vi?

Yes. And u r?