Three

0844 826 8076

If you’d like to make a complaint to Three you can phone the number 0844 826 8076, where they will take details of complaints about their network, customer care, mobile, broadband, 5G and more.

Three Complaint Numbers

Department Contact Number Opening Hours
Three Complaints 0844 826 8076 Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 6pm
Three Network Complaints 0843 218 9631 Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 6pm
Three Mobile Complaints 0843 596 4174 Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 6pm
Three Broadband Complaints 0843 596 4175 Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 6pm
Three Business Complaints 0843 596 4176 Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 6pm
Three 5G Complaints 0844 248 2639 Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 6pm

Three Complaints

If you’re disappointed with the service or customer care that you’ve received from Three you can phone the number 0844 826 8076 to make your complaint. When you call this number they will take the details of your complaint, whether you’re unhappy with a particular product you’ve purchased from them, or the service that you’ve received with that product. Give as much detail as you can in regards to your complaint, and they will do their best to get it resolved quickly for you.

Three Complaints Email

There isn’t a direct email address for you to send your complaint to Three, instead you can contact them via the live chat function on their website. This live chat is available 8am to 11pm, seven days a week. Their trained advisors are on hand to give an instant response to your complaint.

Three Network Complaints

Call the number 0843 218 9631 to make a complaint about the Three Network. You can phone this number to make complaints about connecting to the network, or issues you’ve had with signal on your mobile phone. If you find that you can’t send messages, or make or receive calls for a period of time, call the number above to make your complaint and find out if there is an issue with the Three Network.

Three Mobile Complaints Procedure

The Three Mobile complaints procedure is relatively straight forward, and you can contact them in a number of ways to make your complaint. The quickest way of doing so is by calling the number above to make your complaint. When you phone, their trained advisors will take the details of the complaint and assess whether they will be able to offer a resolve for the case then, or if they will need to investigate it further.

Three aim to have all complaints resolved within 14 days. If you’re not happy with the outcome of the complaint, you contact the Communication Ombudsman who will review your case independently and give their verdict on it.

Three Mobile Complaints

If you’d like to make a complaint about a Three Mobile you can phone the number 0843 596 4174. When you call this number you can make complaints about Three contract mobiles or Three Pay As You Go SIM mobiles too. You can phone this number to make complaints about your account, issues with broken or faulty mobiles, or anything else you’re having issues with.

Three Complaints Address

If you’d prefer to send your complaint in writing to Three, you can send it to the following address:

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

Three Broadband Complaints

Make a complaint about Three Broadband by calling the number 0843 596 4175. When you phone this number you can make complaints regarding the speed of your broadband or issues you might have connecting new devices to the broadband. If you notice your broadband isn’t working for a long period of time, you can phone this number to find out what the issue is and make a complaint about it.

Three Business Complaints

If you have a Three Business account you can call the number 0843 596 4176 to make your complaints relating to this. When you call this number you can complain about issues with your account, problems you’re having with the products, payment and bill concerns and anything else.

Three 5G Complaints

Three are currently putting 5G in a number of cities across the country, if you’d like to complain about this, you can phone the number 0844 248 2639. If you’re unhappy about the work being carried out in your area, maybe it’s affecting your day-to-day life, you can phone this number to raise your concerns.