Thank you for replying. Re "Can you run a virus scan on the device and change the password to see if it allows access." The Macbook is fine - I use Clam X - and the Virgin tech who I spoke (conversation three on Sat) changed the password and promised it would work in an hour. It didn't. Conversation four I was told to wait 24 hours. I did - it still didn't work, Still got 'unable to verify account name or password'. Conversation five, yesterday was when I was told it would now take 5 days to fix - probably - and that if it wasn't working by then to call them back.
Got up this morning and tried the 'new' password and got 'unable to verify account name or password' again. It's a work account so I'm very down about it.
But I'm also cross - you say 'internet security team'. Who gave them the right to monitor my outgoing mail and decide what I can and cannot forward?
I ended up forwarding it from a Gmail account - perfectly fine, no issue. That Virgin is censoring my emails is shocking to me. And that they'd decide I was a bad person (despite being a customer for over 20 years) and lock my email account - and then to be met with a mass of confusion (no-one seems to know what's going on) is frankly depressing. Why can't they access the bit on my account that says 'locked' and then click 'unlock' it?
Any help or guidance will be gratefully received.