Scam/Fraud
6 months ago
Called six times claiming my sim would be cut off in two days.
Reported caller:
Claiming to be O2
Community overview
Community rating:
Negative
3 user reports
First reported 25 Mar 2026
·
Last reported
6 months
ago
About this number
Number formats
- UK format: 020 4540 6528
- International: +44 20 4540 6528
Number details
- Number type: Landline
- Number range allocated to: Colt Technology Services
- Area: London
- Area code: 020
Reported categories
Based on 3 public user reports
Scam/Fraud
100% (3)
User Reports (3)
Scam/Fraud
6 months ago
Telling me they were with O2 network and my phone line was going to be cut off in three days. I am not with O2
Reported caller:
Unknown
Scam/Fraud
6 months ago
Don't know as spoke Ukrainian to them and they put the phone down.
Report this number: 020 4540 6528
↑ Back to reportsDid this number contact you?
You’ve already submitted a report for this number.
Your report may still be going through moderation before it appears publicly.
Your report
How did they contact you?
How would you describe the contact?
Please do not include full names, private addresses, or abusive, hateful, or defamatory content. Please read our Community Standards before posting.
Thank you. Your report has been received.
Before appearing publicly on the site, reports may be reviewed and checked as part of our moderation process.
How to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 4540 6528 and tap the info icon (i)
- Scroll down and tap Block this Caller
- Confirm by tapping Block Contact
On Android
- Open the Phone app and tap the 3-dot menu
- Go to Call history or Recents
- Long press on 020 4540 6528
- Select Block number or Block/report spam
On Landline Phones
Several options are available for UK landlines:
- BT Call Protect - free for BT customers
- TalkTalk CallSafe - free for TalkTalk customers
- Call blocking devices like CPR Call Blocker (available on Amazon)
Register with TPS (Telephone Preference Service)
The TPS is a free service for UK consumers that allows you to opt out of unsolicited sales and marketing calls.
Learn more about TPS registration