Old ntlworld email hacked

Hi,

I have an old ntlworld email account that has just been hacked. They have gone shopping and taken money. They have attempted all weekend to login in to several different accounts and now they are scamming other people using this old account. I have asked the virgin WhatsApp team for help and they gave me a number. The team on the phone number I called couldn’t help. So I have googled and found this. Please help me to delete this ntlworld account. Thanks