I have the same problem. Change password and it says they have sent a confirmation email. Cant access this because I cant get to emails on any device. When trying to log in I just get mailbox unavailable and to try again in an hour. This has been the case all day.
I see previous people have had assistance with this via the moderator. I would really appreciate some help if possible. there has been suspicious activity recently and I feel it may be locked but cannot get through for telephone support.
On second check it doesn't appear to be a verification notification, just a confirmation email. I am confident I attempted the password change through the correct channels, logging in to the main virginmedia site. the email address is a secondary to the main account. The problem seems to be the same as many other people are having on here and I seem to remember the same thing happening about a year ago. took a week to sort out but now cant remember the solution.
I am one of the others with this problem and am still waiting for a reply to my post. It seems that a concerted attack has been made on ntlworld.com addresses.
I have changed the password on the affected account and received the confirmation email ... but the mailbox is still unavailable. It would save a lot of hassle all round if the VM system unlocked the mailbox once the password has been changed.