I left VM about 3 years ago but retained my VM.com email. I assumed it would delete automatically but it didn't. I put an auto forward to my new email address and forgot all about it. I could still access it from my phone. Just before Christmas I started to receive mailer deamon messages indicating that my VM account had been hacked and was sending all sorts of spam and potentially malicious messages. In recent days people from my contact list (including my boss!) have been contacting me to ask if I have sent them strange emails. The hackers seem to be replying to messages sent to me 3 years ago asking people to click on links etc.
Its the first time this has happened to me so it is a bit alarming. I phoned up VM but was told they cannot delete email accounts and they should be auto deleted within 6 months of leaving. The only advice they gave was to change my password. But I can't access my VM account anymore. It doesn't recognise my username.