How to complain

We do our best to make sure you always have a great experience with our network. But if for any reason you’re not happy, we want to hear from you so we can make it better.

You’ll find how to submit your complaint below. You can also raise a complaint on behalf of someone else, as long as we get confirmation of consent.

Information message
If you need help submitting your complaint, see our Accessibility page. You can find out more about our complaints process by reading our  Complaints Code of Practice.

Ways to complain

Speak to us online (best option)

Use Live Chat to get in touch about your complaint right away.

Live Chat is open 08:00-22:00 Monday to Friday, and 09:00-20:00 on weekends.

Call us

We’re able to take your call from 08:00-20:00 Monday to Friday, and 09:00-18:00 on weekends. Standard rates apply to all numbers except 333, which is free to call from all Three phones on Advanced plans.

Personal customers.

From your Three phone 

From any other number
0333 338 1001

From abroad
+44 7782 333 333
(standard roaming rates apply)

Mobile Broadband customers.

From your Three phone 

From any other number
0333 338 1003

From abroad
+44 7782 333 500
(standard roaming rates apply)

Business customers.

From your Three phone 

From any other number
0333 338 1004

Write to us

If you’d prefer to write, please send your thoughts to:

Three Customer Complaints
Hutchison 3G UK Ltd.
PO Box 333
G2 9AG

Fill out our complaints form

Use this form to submit a complaint to us online.

We answer most complaints within 7 working days.

It can sometimes take longer. If you’ve already sent a form, we’ll be in touch as soon as possible. To talk sooner, use Live Chat.