Have you by any chance clicked on a link within an email that asked for your password?
Losing emails, and especially contacts can be symptom of a malicious attack.
Just to be safe I'd suggest running a virus and malware scan and then reset your password to the email account.
If you haven't done so I'd recommend setting up recovery email and phone numbers on your Email account.
As @Gliwmaeden2 says, once they have been deleted, unfortunately they have gone.
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).
