I got this number ringing me too.It says: You have 1 missed call: (07) 3018 0586. 05:31pm 6/6/08who is it!!!!

I had a call from this number (07) 3018 0586) within a few hours of installing a brand new SIM which had not made any calls; a recorded message waffled on about a quiz, inviting me to start with "Who is our current Prime minister, press 1 for John Howard, 2 for Kevin Rudd".  I just hung up as it was so suspicious. I hope they are wasting a lot of $ on these calls to apparently randomly selected numbers!
Thanks for this web site to vent on :-)

Hi there peeps I just recieved the same call at 17:45 @ 23/5/08 I didnt pick up becuase i was playing GTA IV wen i looked at it i seacrhed the net and came across this thanks guys for informing us.

further details the no. that it wants you to txt back is 1999 27 77 so i guess it does charge you as that is premium txt service. (NB: i doubt there really is cash to win from it thou)

Proabaly a voip number and they are using a virtual pabx to spam people.
not that hard as astrix and openpabx have there source code and are highly developed so any script kiddy can "h4ck" it

got a call late one night last week from this number and hung up after hearing recorded message. just got another call from another number starting with 07. knew something was up, did not expect to find anything online but thankfully i did! will not be answering anymore.