Is full fibre available in your area & if so who provides it, this will often be Openreach or CityFibre, but there are a few other companies as well?
If you are happy to wait, TalkTalk are providing a free upgrade to Fibre with Digital Voice to keep your landline number. If however, you don't want to wait & are happy to pay for this, contact the loyalty dept on their direct number 0345 1725157.
From the 29th of March our TalkTalk Community will move to peer-to-peer support and the TalkTalk team will no longer be here to support with queries. Don’t worry we still have plenty of ways to reach out if you need to speak to TalkTalk directly. For more details check out the link here
How to contact TalkTalk Broadband - TalkTalk Help & Support
