Are You using a Basic or TTS voice?
To get those types of alerts You need to use a TTS voice, the best solution is to use this Voice file:

[Only registered and activated users can see links. ]

this uses the system voice of your device, so also the voice of Google, (the one that uses Maps), but you can also install Vocalizer or other types and use these.

The only problem is that you have to update the dictionary.voice yourself with the latest updates from the Pongo Skin...... or have someone who already has the updated Voice file post it to you.