Grrr.

Internets, please help!

I tried to call Australia and whenever i call the international dialling thingummy it doesn't work. The number i've been dialling is 0006117, and i've tried it from several different phones, all of which are meant to be able to handle international calls. Is there something else i'm meant to dial first? I've looked all over for help on this and i still can't work out what i'm doing wrong.