I want to know if it is possible to do the following:

1. When "Unknown" calls, after a few seconds audio recording starts and asks caller to recall but with identified number this time. Otherwise there is no other way to reach recipient.

2. When not answering for a long time, audio recording starts and tells that recipient is busy.

I want to hire 2 professional voiceovers to voiceover all the above on 2 different languages.

Is this all possible?