Telemarketer
06 Oct 2025
Cold call for FX services from company called Spectrum. Said they got my number from Wiza. Blocked them.
Community overview
Community rating:
Mixed
5 user reports
First reported 16 Jul 2020
·
Last reported
11 months
ago
User Reports (5)
Spam
02 Nov 2022
Sonny from Spectrum - it's a cold call in relation to Foreign Exchange payments.
Spam
18 Jan 2021
Dangerous
Unknown Caller
16 Dec 2020
Left us lyrics from a Dutchavelli track , very random
Unknown Caller
16 Jul 2020
Asked to speak to our Accounts department.
Report this number
↑ Back to reportsHow to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 3440 7554 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 3440 7554
- 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 registrationAbout this number
Number formats
- UK format: 020 3440 7554
- International: +44 20 3440 7554
Number details
- Number type: Landline
- Number range allocated to: GTT-EMEA LTD
- Area: London
- Area code: 020