Get through to Three without the hold queue
Three's support leans on chat, and the phone line keeps shorter hours than the chat does. People ring when a bill has gone wrong, a contract won't end cleanly, or the chat has handed them off one time too many.
Three customer service
0333 338 1001- Opening hours
- Mon to Fri 8am to 8pm, Sat and Sun 9am to 6pm
- When you ring
- Have the mobile number on the account and your account security details ready.
- Worth knowing
- Three promotes chat over the phone. 333 is free from a Three phone and reaches the same team.
Other lines
- Mobile broadband customers0333 338 1003
Number checked against Three's own site on 10 October 2026. Call charges may apply if you ring it yourself.
What HoldMyCall does on a Three call
- 1
Dials and waits
It rings 0333 338 1001, works through the menu and sits in the queue for up to an hour. You get on with your day.
- 2
Has the conversation
It introduces itself as an AI assistant calling on your behalf, gives the details you provided when asked, and keeps asking for the outcome you wanted.
- 3
Reports back
A summary, whether it got what you asked for, any reference numbers, and the full transcript and recording. If they insist on speaking to you, your phone rings and one keypress joins the live call.
Things people ask it to sort with Three
Get a PAC code
“I want to move my number to another network. Request the PAC code and confirm any final charges.”
Query a bill
“My bill is higher than usual this month. Find out what the extra charges are and whether any can be removed.”
Cancel at the end of a contract
“My contract ends next month. Give notice to cancel, confirm the final bill, and get a reference.”
Have these ready
Whether you ring or the assistant does, Three will want some of these before they will talk about your account.
- The Three mobile number on the account
- Account holder's name and date of birth
- Security answer or password on the account
Save them once in Settings and every call starts with them filled in. The assistant only gives a detail when it is asked for it, and it is hard-coded to refuse payments and contract changes.
Other ways to reach Three
You sometimes get an answer faster by another route. These are the ones Three publishes.
- Live chat, Mon to Fri 8am to 10pm, weekends 9am to 8pm
- Complaint form on three.co.uk
- The Three app
- Post: Three Customer Complaints, Hutchison 3G UK Ltd, PO Box 333, Glasgow, G2 9AG
If Three won't sort it
Raise it by chat, phone, the online form or post. Three answers most complaints within 7 working days and aims for a final answer within 6 weeks.
CISAS, the communications adjudication scheme. Free, after Three's final answer or 6 weeks after complaining. Device finance complaints go to the Financial Ombudsman Service after 8 weeks.
Let it ring Three for you.
First 5 calls are free while we're in beta. The assistant never pretends to be human, and every word is yours to keep.