If you are moving to another provider they can usually instruct TalkTalk to cancel your broadband.
However, if you just wish to give a month's notice you need to phone and speak to the loyalty team.Try phoning 0345 172 0088
Opening Hours can be found here - https://community.talktalk.co.uk/t5/Articles/How-to-contact-TalkTalk-Broadband/ta-p/2230529#
Even if you instruct a new provider, it would probably be best to phone to confirm you are leaving once you have placed the order.
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
