I just called emergency - 000 in Australia.
I have never done that before. It was scary and exciting. pity it was for such a small thing.
I was going to check my PO Box and walked past a rubbish bin that was happily on fire. As I stood and watched it, I realised that hardly anyone was bothering about it. The whole of lunchtime crowd just avoided it. I was shocked that no-one was bothering to call it in!
I called the number and reported it.
What a good little samaritan am I!