Missed call on my optus prepaid. No one has my optus prepaid number, i only use it to call chicks behind my gf's back so only 4 people have my number!

Just got a call from this number, and hung up.  Used to be with Optus, and kept my number when I changed to Crazy Johns (who resell Vodafone)

Hi guys I just got a call from this mystery caller. I listened to the first 5secs, then i hung up. Does anyone know if this call charges? I'm with Soul who is hooked up with OPTUS... hhmmm

I got a missing call from the number today...I'm Optus,too.What a shame...I thought I get a new job from Sydney.Ha~....just dreaming!

I had a call from this number today.With the recorded ' Congratulation bla bla....' then 'What colour is the Australian flag" quiz question:press 1 for blue,press 2 for yellow.I didn't know what did I do then the call droped out.I google this number and it link me to here.I am with optus pre-paid!!!

got a call too, saying that i have won some credit, and asked me what's the colour of australian flag.
accidentally hang up lol