020 3504 3806 Negative

Community overview

Community rating: Negative

30 user reports

First reported 7 Oct 2025 Last reported 2 months ago

User Reports (30)

Unknown Caller
2 months ago

Claimed to be from EE and said they could lower my bill. There was that call-centre delay first, then they started asking for details. I just ended that strange call, suspicious

Scam/Fraud
2 months ago

Provider contract call.

Spam
3 months ago

London nuisance call.

Unknown Caller
3 months ago

why did they call me?

Unknown Caller
09 Oct 2025

Claiming to be from Sky - SCAM!

Spam
09 Oct 2025

Hung up after 11 seconds without saying a word

Scam/Fraud
07 Oct 2025

Claimed to be from 3 network offering cheaper deal than my current contract. I am not with 3. They said the companies were merging, which I believe is incorrect. They stated I could check on Google. I said I could but it won't say they are merging on there. I told her to tell me the next line off her script but she claimed not to understand so I explained and she huffed and ended the call

Scam/Fraud
07 Oct 2025

Pretended to be from 3 mobile, which I'm with, but wanted to give a special offer..... just needed my CVV and expiry from my card! Emailed from a scam address to help with the fraud!

Scam/Fraud
07 Oct 2025

Hung up as soon as I answered. Can only assume they are goading for people to call back. They left no voicemail nor sent a message. Likely scam / fraud.

Unknown Caller
07 Oct 2025

Most likely spam called and hung up

Spam
07 Oct 2025

Incompetent spammers. Could hear several people jabbering in the background on their calls. My personal spammer was almost inaudible. She asked if I could hear her. I replied that I could mainly hear everyone else. She then hung up, so I never got to hear her lies.

Reported caller: Spammers R Us
Spam
07 Oct 2025

Said nothing hung up

Spam
07 Oct 2025

Hung up when I answered.

Unknown Caller
07 Oct 2025

hung up on answer

Spam
07 Oct 2025

Hung up when I answered

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How to Block This Number

On iPhone

  1. Open the Phone app and go to Recents
  2. Find the number 020 3504 3806 and tap the info icon (i)
  3. Scroll down and tap Block this Caller
  4. Confirm by tapping Block Contact

On Android

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  2. Go to Call history or Recents
  3. Long press on 020 3504 3806
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About this number

Number formats

  • UK format: 020 3504 3806
  • International: +44 20 3504 3806

Number details

  • Number type: Landline
  • Number range allocated to: Core Telecom Limited
  • Area: London
  • Area code: 020

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