020 3909 6758 Negative Who called me from this phone number?

London • Gamma Telecom Holdings Limited
This number is a landline operated by Gamma Telecom Holdings Limited and located in London, UK. The overall user rating for this number is Negative. The number 02039096758 has been searched 562 times, with 11 user comments helping to identify the caller's intent.
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At a glance

Community signals

  • User reports: 11 user reports
  • Searches: 562
  • Last reported: about 1 month ago
  • First reported: 8 months ago
  • Typical call time: before 11am (64% of calls)

Number profile

  • UK format: 020 3909 6758
  • International: +442039096758
  • Number type: Landline
  • Carrier: Gamma Telecom Holdings Limited
  • Area: London
  • Area code: 020

User Reports (11)

Your reports help others decide whether to answer calls from this number. Share your experience to help the community!

Unknown Caller
1 month ago

Said they were Halifax press any button to proceed

Legitimate
13 Dec 2025

Claimed money taken from Halifax. Had FULL name, last 4 bank card digits and obviously phone number I’ve just had card declined by online…rang Halifax it’s a legitimate number

Scam/Fraud
10 Dec 2025

It's a scam, don't answer

Scam/Fraud
09 Dec 2025

Claimed money taken from Halifax. Had FULL name, last 4 bank card digits and obviously phone number

Unknown Caller
05 Dec 2025

I tried to make an online payment, my bank blocked the valid transaction. They did so twice. A "one-time" up sales offer for a digital marketing product. A few minutes later I received a call from this number 02039096758 stating they were calling from my bank since the bank blocked a payment twice (and the sum in GBP) my payment would have been in US dollars , so total amount in GBP appear legit. They then asked for birth date, but stated they will NOT ask for any log in user names or log in details or security details. I did enter my birth date as the timing of the call and the details given matched my both my failed payment attempts. They then stated I can retry to make the payment in 10 mins as I had wanted to make this payment. After the call I felt a bit at unease after all. I would never ever normally give any details to automated calls, now I had given birth date. So I checked the phone number. Does not belong to my bank but to Gamma Telecom Plc. Checked gamma telecoms website, and it is a valid company providing services online giants and UK gov. So feel more at ease. I logged into my bank and checked any outgoing pending payments, nothing that should not be there. So all in all. Everything APPEAR VALID. I assume my bank is using Gamma Telecom Plc services. Gamma telecoms website suggest they are providing automated services to make business transactions more human and safer and better. The only disturbing part is that they presented themselves as my bank, and that my bank clearly gives access to payment attempts and some personal information.

Caller: Claimed to be my bank...
Scam/Fraud
13 Nov 2025

Pretends to be your bank and tells you to call a number. Linked to a chargeback ad on Instagram

Scam/Fraud
10 Nov 2025

Said they were my bank

Scam/Fraud
28 Oct 2025

Read full name out claiming it was Halifax and press a number to proceed to giving details

Scam/Fraud
03 Oct 2025

I declined the call. They left a voice “Declined Please press any button so we can run through a quick fraud check This call is for **** from bank of Scotland. We need to check if you attempted a transaction using your card that we…”

Unknown Caller
26 Sep 2025

Recorded message saying my debit card details had been accessed and to press a number to proceed

Scam/Fraud
15 Sep 2025

Recorded message saying my debit card details had been accessed and to press a number to proceed

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What type of call was it?

Reported locations

Reported from 21 UK cities

Amesbury, Easton-in-Gordano, Neath, Torpoint, Porthcawl, Keighley, London, Huddersfield, Morden, Clayton, Strathblane, London (Shadwell), Sherburn, East Hoathly, Stepney, Manchester, Oxford, Peterborough, Rochdale, Nunthorpe, Wrea Green

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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 3909 6758 and tap the info icon (i)
  3. Scroll down and tap Block this Caller
  4. Confirm by tapping Block Contact

On Android

  1. Open the Phone app and tap the 3-dot menu
  2. Go to Call history or Recents
  3. Long press on 020 3909 6758
  4. 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

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Call Costs

Calling 02039096758 from a landline may cost up to 16p per minute. Many providers charge a 23p call set-up fee. Call packages often include these types of calls. You might not incur additional charges for calling this number, depending on your provider.

Dialling Instructions

Local UK callers can dial 02039096758 directly.

International callers should dial +44 20 3909 6758 or 0044 20 3909 6758. No leading zero is required when dialling abroad, e.g., +44(0)2039096758.