- Spam
One community report for 04 2138 7804 (0421387804). Caller described as rude with poor communication. Optus mobile number.
Suspicious Call Report for 04 2138 7804
A single contributor has reported a suspicious call from 04 2138 7804 (also written as 0421387804). The caller was described as rude and unable to hold a coherent conversation, raising concerns about the legitimacy of the call.
This Optus mobile number has been flagged on Reverseau by someone who answered the call. The behaviour reported - rudeness combined with poor communication - suggests the caller may have been attempting to manipulate or confuse the recipient.
What the Caller from 04 2138 7804 Was Like
According to the contributor's account, the person calling from 04 2138 7804 displayed aggressive or dismissive behaviour. The inability to maintain a coherent conversation could indicate either deliberate evasiveness or poor quality of the call itself. This type of behaviour is sometimes used in social engineering attempts where callers try to catch recipients off-guard or frustrated.
How to Respond to Calls from 04 2138 7804
If 0421387804 calls you:
- Do not: Continue the conversation if the caller becomes rude or evasive, share personal information, or agree to anything without verification
- Do: End the call if you feel uncomfortable, ask the caller to identify themselves clearly, request a callback number and verify it independently before calling back
- Do: Block the number if it calls again, or note the time and date for your records
Report This Number
If you receive further calls from 04 2138 7804 and suspect suspicious activity, you can report it to Australian authorities:
- ACMA (Australian Communications and Media Authority) - acma.gov.au - for telemarketing or robocall violations
- Scamwatch - scamwatch.gov.au - if you believe the call was a scam attempt
- ReportCyber - cyber.gov.au - if the call involved phishing, fraud, or cybersecurity threats
- Add your report to Reverseau to help other Australians identify calls from 0421387804
Why Report Suspicious Numbers
Community reports about numbers like 04 2138 7804 help build a picture of calling patterns across Australia. Even a single report of suspicious behaviour can alert others and help identify coordinated calling campaigns. If you've experienced something similar from this number or another suspicious caller, contributing your report helps protect the broader community.
Help others by sharing your experience with 0421 387 804!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Bloke was rude and couldn't hold a decent conversation
Help others by sharing your experience with 0421 387 804!
WRITE A REVIEWFrequently Asked Questions
Should I call back 04 2138 7804 if they hang up?
No. If 0421387804 calls and hangs up, do not call back. Returning calls to unknown numbers can confirm your number is active and lead to more calls. If you're concerned about a missed call, search the number (04 2138 7804) on Reverseau first to see if others have reported it.
What does 'suspicious' mean for this number?
The contributor who reported 04 2138 7804 described the caller as rude and unable to have a normal conversation. This behaviour can indicate a scam attempt, harassment, or someone trying to manipulate or confuse the recipient. One report alone doesn't confirm what the caller wanted, but it's worth being cautious if 0421387804 calls you.
Is 04 2138 7804 definitely a scam?
Based on the single report, we cannot confirm 0421387804 is a scam. The contributor flagged it as suspicious due to the caller's rude behaviour and poor communication. If more people report similar experiences from 04 2138 7804, a clearer pattern may emerge. Report your own experience if you receive a call from this number.
Can I block 04 2138 7804 on my phone?
Yes. Most Australian phones allow you to block numbers directly. On iPhone, open the call log, find 0421387804, tap the info icon, and select 'Block this Caller'. On Android, open your Phone app, long-press 04 2138 7804, and select 'Block number'. You can also ask your phone provider to block it if calls persist.
Should I report 0421387804 to my provider?
You can contact Optus (the provider for 04 2138 7804) if the calls become frequent or threatening, but your main option is to block the number yourself. For suspicious calls, also consider reporting to ACMA (acma.gov.au) or Scamwatch (scamwatch.gov.au) if you suspect fraud.
Why is there only one report for 04 2138 7804?
Not everyone who receives a suspicious call reports it. A single report for 0421387804 suggests either the number has made few calls, or most recipients haven't used a reverse lookup service. If you receive a call from 04 2138 7804, adding your report helps build a clearer picture of its activity and protects other Australians.