Thanks VM for security warning after I checked voicemail from a landline
Credit where credit is due.
Left my mobile at home so I dialled in on a land line and left a landline message warning callers.
VM texted me to say that the voicemail had been accessed and if I didn't know about it I should contact VM. They repeated with another text after I checked for messages before leaving the office. I suppose this is a response to the phone hacking.
I moan when things go wrong or VIrgin are annoying so here is a virtual pat on the back. 👍