It's probably due to your contract period and promotional period expiring.
You can check this in My Account and if so, I'd suggest you phone the Loyalty Team to discuss as they hold the best deals and you can tailor your requirements with them.
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#
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).
