Have you tried the online checks via My Account? Have you tried connecting at the test socket?
If you would like the support team here to look into this for you make sure that your personal details including TalkTalk phone number and/or account number are complete on your community profile (click here) so that they can link your forum identity with your account and then wait for them to respond. Bear in mind that they won't be back online until Monday.
If you want a quicker response contact customer services directly when they reopen at 9:00am tomorrow.
