03 9003 3553 - 0390033553: Telstra Impersonation Spam

• Unknown
• Suspicious

03 9003 3553 (0390033553): Contributors report impersonation calls falsely claiming to be from Telstra about home internet services.

Telstra Impersonation Reports for 03 9003 3553

Three contributors have reported calls from 03 9003 3553 (also written as 0390033553) impersonating Telstra staff. The pattern centres on callers claiming to represent Telstra and offering unsolicited assistance with home internet services. Two separate reports confirm contributors who answered calls from 0390033553 heard the same impersonation claim about Telstra home internet.

The consistency across multiple reports about 03 9003 3553 suggests a coordinated impersonation campaign targeting Australian households. Contributors note the caller did not have legitimate account information, indicating they were cold-calling using generic Telstra references rather than targeting existing customers with known details.

What Callers from 03 9003 3553 Claim

When answering calls from 03 9003 3553, contributors heard callers identify themselves as representatives from Telstra. The stated purpose was to discuss home internet services, though the reports indicate no account-specific information was mentioned. This generic approach is typical of impersonation campaigns that rely on the recognition of a major brand name to build initial credibility.

One contributor who called back the number after receiving a voicemail reached only a recorded message stating all operators were busy, which is inconsistent with legitimate Telstra customer service operations that maintain dedicated call centre capacity.

Report Patterns and Timing

The three reports about 0390033553 span from late February to early March 2026. One call arrived at 8:30pm, outside typical business hours for legitimate Telstra customer outreach. Two contributors answered calls directly, while one received a voicemail notification marked as suspected spam before attempting to return the call.

The clustering of reports within a two-week period suggests the number was actively used for this impersonation campaign during that timeframe. Contributors consistently reported the Telstra claim without variation, indicating a scripted approach by whoever is operating the number.

What to Do If You Receive a Call from 03 9003 3553

If 03 9003 3553 calls you:

• Do not: Confirm your account details, provide personal information, or allow remote access to your devices
• Do not: Follow instructions to visit websites, download apps, or make payments
• Do: Hang up immediately and independently contact Telstra on their official number (133 135) to verify the caller's identity
• Do: Block the number 0390033553 in your phone settings to prevent repeat calls
• Do: Mark the call as spam in your phone's call logs for future filtering

Legitimate Telstra outbound calls come from numbers customers can verify through the official Telstra website or by calling their published customer service line. If you have genuine Telstra services, your account details and recent activity are already known to Telstra representatives, and they should be able to verify this information without requiring you to provide it first.

What to Do If You Receive an SMS from 03 9003 3553

If you receive a text message from 0390033553:

• Do not: Click any links in the message
• Do not: Reply to the message or provide any information
• Do: Delete the message immediately
• Do: Block the number in your phone's SMS settings
• Do: Report the SMS as spam by forwarding it to 0429 999 888 (ACMA spam reporting number)

How to Report 03 9003 3553

Contributors can report calls and SMS from 0390033553 through multiple Australian government channels:

• Scamwatch: Report suspected scams and impersonation to scamwatch.gov.au, run by the ACCC
• ACMA: Lodge complaints about spam calls and SMS at acma.gov.au
• Telstra: Report impersonation activity directly to Telstra at telstra.com.au or call 133 135 to alert them that their brand is being impersonated by 03 9003 3553
• Reverseau: Add your experience with 0390033553 to the community report database to help other Australians identify this number

If you've lost money or provided sensitive information to a caller from 03 9003 3553, also report the incident to ReportCyber at cyber.gov.au.

Frequently Asked Questions