- Spam
- Suspicious
Community reports for 08 7002 1809 (0870021809): Robocalls with press options in Chinese and English, leaving voicemail messages. Optus South Australia number.
Robocall Reports for 08 7002 1809
Two contributors have reported calls from 08 7002 1809 (also written as 0870021809), flagging automated robocall activity originating from an Optus local service number in South Australia. The pattern involves pre-recorded messages with interactive menu options, suggesting systematic outbound calling rather than legitimate customer service contact.
One contributor noted that blocking 08 7002 1809 proved ineffective, as callers cycled through different extensions to bypass the block. This extension-rotation behaviour is typical of robocall operations attempting to evade individual call blocks.
What Callers from 08 7002 1809 Leave on Voicemail
Contributors reported receiving voicemail messages from 0870021809 with audio prompts offering language selection. One message presented "Press 1 for Chinese or 2 for English," indicating automated call distribution. A separate report described a voicemail in Chinese with background piano music, though the content remained unclear to the recipient.
The use of language-specific routing and pre-recorded audio confirms the robocall nature of calls from 08 7002 1809. The piano music background suggests either a compromised or spoofed number rather than a direct legitimate business line.
Report Patterns and Timing
Both reports of 08 7002 1809 came through voicemail, indicating the callers did not connect with recipients directly. The most recent report arrived in February 2026, with an earlier report from mid-February. Contributors describe the messages as "annoying," reflecting the disruptive nature of repeated unsolicited robocalls.
The fact that 0870021809 cycles through different extensions to bypass blocks suggests ongoing operational activity rather than a one-off misdial or system error.
What to Do If You Receive a Call from 08 7002 1809
If 08 7002 1809 calls you:
- Do not: Press any number in response to the menu prompt, return the call, or engage with the voicemail content
- Do: Let calls go to voicemail, block the number immediately, and block subsequent extensions from the same source if they reappear
- Do: Check your Optus account settings to confirm you haven't activated any service that would legitimately trigger automated messages
- Do: Report the call to the Do Not Call Register if you have not previously opted out
How to Report 08 7002 1809
If you receive unwanted robocalls from 08 7002 1809 or 0870021809:
- Report to the Australian Communications and Media Authority (ACMA) at acma.gov.au, which tracks patterns across multiple reports and can take action against repeat offenders
- Register your number on the Do Not Call Register at donotcall.gov.au if you wish to opt out of telemarketing calls generally
- Report to Scamwatch at scamwatch.gov.au if the robocall includes scam content (false claims about accounts, packages, or threats)
- Add your experience to Reverseau by reporting the call details, which helps build the community intelligence picture of this number's behaviour
Help others by sharing your experience with (08) 7002 1809!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Blocked this number but another will pop up with different extension, leave annoying messages with press 1 for Chinese or 2 for English
Voice message in Chinese with piano music in background, couldn't understand it
Help others by sharing your experience with (08) 7002 1809!
WRITE A REVIEWFrequently Asked Questions
Why does 08 7002 1809 keep calling with different extensions?
Robocall operations use extension rotation to evade call blocks. When you block 08 7002 1809, the system routes calls through a different extension number to bypass your block. Contributors reported this pattern with 0870021809, where blocking one extension resulted in calls from another. Blocking individual extensions is reactive; reporting to ACMA targets the underlying operation.
Should I press 1 or 2 when 0870021809 prompts me for language selection?
No. Do not press any key in response to prompts from 08 7002 1809. Pressing a number confirms your line is active and monitored by a person, which increases the likelihood of more calls. Let the call go to voicemail and block the number instead.
Is 08 7002 1809 a legitimate Optus number?
The number 0870021809 is provisioned through Optus in South Australia, but that does not mean Optus is responsible for the calls. Robocallers frequently spoof or hijack legitimate carrier numbers to appear legitimate. Verify any claim by contacting Optus directly through their official website or a known phone number, never by returning the call to 08 7002 1809.
What does the piano music in the voicemail from 08 7002 1809 mean?
The piano music background in one voicemail from 0870021809 is unusual for a legitimate business line and suggests either a misdirected system, a spoofed number, or deliberate obfuscation. It does not indicate the caller's identity or purpose. Treat it as confirmation that the call is automated and disregard the content.
Can I report 0870021809 to Optus directly?
You can contact Optus to report that their number 08 7002 1809 appears to be spoofed or misused, but your primary report should go to ACMA (acma.gov.au), which has regulatory authority to investigate robocall operations. ACMA can pursue the caller regardless of which carrier's infrastructure was used.
If I block 08 7002 1809, will the robocalls stop?
Blocking 08 7002 1809 may reduce calls from that specific extension, but as contributors reported, robocall operations often rotate extensions. The block is a temporary measure. Report to ACMA at acma.gov.au to target the underlying operation, and continue blocking new extensions as they appear.