Im assuming from your description that you have an older YouView box.
TalkTalk no longer have supplies of these as the boxes are approaching end of life.
Have you tried resetting the remote and changing batteries? Instructions to reset can be found here.
https://community.talktalk.co.uk/t5/Articles/TalkTalk-Remote-Control-Guide/ta-p/2204370
If all else fails there are usually remotes for sale on ebay.
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).
