Thank you for that number. I tried it and am afraid it was an epic fail. It seems just to be for current Virgin media customers or new sales. After speaking online to 2 different robots and no suitable options I finally lied to be able to get through to a human online who agreed to transfer me to the tech team and then didn’t. 🤣. I may have to wait until the world returns to normal.
Fear Not! You have come to the right place, Trude1.
As you may know, the mailbox should have been closed AND deleted automatically 90 days after you finished being a customer, according to VM's own Terms and Conditions. But the process fails all too often and leaves the former customer vulnerable to hacking and theft of personal and financial details (IMO, someone should definitely claim for damages from VM or complain to ICO!).
Only VM staff can raise a ticket to get the mailbox deleted manually. The friendly Forum Team will visit this thread in the next few days and then take your personal details by private message. Reply times are difficult to guess, so you will have to be patient.
When they say it is done, you can verify it is gone by running the email address(es) through mailtester.com.
In the meantime, if you still have access via an email client (Try Thunderbird - using IMAP process which synchronises with the mailbox stored on the VM server), delete everything from all the folders to reduce the information available to hackers.