I've had calls from this number as well but never answered. If you guys are saying it's sportsbet, there's a good chance if you're a member of a footy team they would have sold your details to them.

Ring up your phone provider and get a trace put on your line, make note of the time of the calls from then on and after 3 hits, the provider will take action.

I keep getting these calls as well from this number and I am also really pissed. Interesting about sportsbet.com etc as I have an account with bet ezy and xtradiv which are two online betting sites, wonder if there is a connection

I got a call today a few minutes ago, felt it strange to get a call from an unknown number, because my number is private and only new, so only friends and a few businesses have it. The phone only rand about 3 times, to quick before  I could get to it or the answering machine could answer.After reading this I won't try calling back, or answering in future, prob some telemarketing computer checking which numbers are active, and also what times of day people answer so their reps know when to call and catch someone at home.

I keep getting calls from (02) 8198 1100It disconnects after 2 ringsWhen I try to call it back I'm told the number has been disconnected

Further to my last post I found the following link, I think all this is saying though is it sounds link a generic number maybe that VOIP providers use for outgoing calls, so really it could be multiple customers using the same company for VOIP, even if this is a system outage fault notice.

http://www.adam.com.au/outages_system/outages-detail-2593.php

Network Status


AdamTalk Incorrect Caller ID for Private Numbers
Outage Type- Adamtalk
Impacted Customers- AdamTalk Customers With A Private Number
Impact Started- 9:00 Wed 6 May 2009
Impact Ceased- Ongoing
Adam Internet technicians are currently investigating an issue effecting customers with caller disabled, or have requested a private number. Customers may experience incorrect caller id when making a call. Instead of a Private Number, the number '(02) 8198 1100' maybe shown.

Calls will still route correctly, and audio is still correct, however, an incorrect caller id is shown.

UPDATE 2009-05-11 11:00: We are continuing to investigate this issue, and have escalated the case through our upstream provider.