Please complete your community forum profile details for Talktalk staff to identify your account, @Jackie6659.
Go via your avatar; settings; complete Personal Information. SAVE CHANGES.
Have you actually left Talktalk?
Can you log into webmail still?
If it's some time ago, and you didn't subscribe to Mail Plus, you'd lose the email address eventually.
But if it's recently, you should still have access.
More explanation of exactly what happened, when would be helpful.
Gliwmaeden2, a fellow customer.
