I've got the same problem. I actually think it's unlikely that it is actually optus. they would surely market their products in a better fashion that this.   so i think that if we all contact optus about the issue, they will probably be more successful in finding out who it is and stopping it, than we would be.

Optus parasites...probably a curry muncher who can't speak a word of English.  I stopped answering but the stinking bastards keep phoning.

I keep getting missed calls from this number too. If it is an optus person then why are they calling me? I've never been with optus. Always been with telstra.

It's an optus sales person. They've called me four times in a week. I missed the first call, and each of the three successive calls, I asked them to put me on their do not call list. According to the last person I spoke to, it takes 30 days for that to take affect, which just doesn't make sense.

I rang the TIO who gave them 10 days to get back to me with a salution to them calling me 7 times a day. They never ever get through to me just hang up all the time. So when they actually call me i'm going to put in a harrasment case!

Keeps ringing the phone in my school bus, this is a private number.