Thank you for your post, and welcome to the Community Forums 🙂
I'm sorry to hear you've having some trouble with your NTL world email account. I'm unsure why you have been advised that we cannot help if you have this particular email domain, as it's simply not correct.
However what DJ_Shadow1966 has advised is correct, and that any emails that are attached to former accounts will be deleted after 90 days of the account disconnection.
Please let us know if that's not the case and we'll be more than happy to help further.