Since O2 now is our provider after joining with Virgin I've had one or two calls supposed to be O2.I was once called (supposedly) by 02, my phone provider. It came up on the screen as being 02. He spoke about offering me a better deal which I was looking for. However I was in John Lewis at the time and obviously didn't want to deal with it then, I said call back later. However he was very insistent I should do it then and there, I wasn't comfortable about it and ended the call. I now know that cyber criminals can change the caller ID to another company's name, its called spoofing, to make you trust who you're speaking too. Didn't know that then.
Patsy, you sound pretty savvy with the VPM. I love the Microsoft story, we used to get loads of those calls when we had a landline. My mum, who was in her late 70s, knew they were a scam so she used to play the dotty old lady routine and annoy them so they put the phone down! And once I got an obviously scam call so I said "you'd better speak to my husband when he gets home, he's a chief inspector in the fraud squad". They put the phone down pretty quickly! As I'm not married it was a naughty lie.
As soon as they say they are from O2 or wherever I stop them and ask them how they've got this number,they soon disconnect the call.
I've been well trained by hubby.