It should be possible to do this yourself in My Account, @Bemapet, but if it doesn't seem to be working correctly, just contact Talktalk directly during the day on 03451 720088:
https://community.talktalk.co.uk/t5/Articles/How-to-contact-TalkTalk-Broadband/ta-p/2230529
Staff on here can also do that for you, but they are not on here so much over the festive period.
Presuming that you are referring to a calls boost?
I'll move this to the billing section, as it's not a fault with your phone line.
Gliwmaeden2, a fellow customer.
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 in the post at the top of any forum message board.
