Here in Australia, I recently was trying to get in touch with the non-emergency police number (I had seen 2 kids, one maybe 2 years old, the other 4 at most, playing alone, on the median strip of a dual carriageway road, with no one else in sight), via directory assist, but was redirected to 000 (Our emergency number), so I hung up, to try and get the direct number again. Within 5 seconds I was called back by emergency services, and asked to explain in detail what had happened, why I had hung up, and what the situation was.

The operator told me that, typically, they treat people hanging up at any stage during a 000 call extremely seriously, and will follow up, and will usually send officers out if the call is from a land line and they have an address, even if the caller says no officer is needed.