I had a phone call this morning from 0207 059xxxx number ( i have the full number) claiming to be from Virgin Media - it sounded like a call centre somewhere in Asia. They said my router had to be changed and they would send a new one. They emphasised there was no charge for this and they didn't need any details from me. They did not ask for password or other account details. The only information they asked for confirmation of was the first line of my address and postcode.
I challenged them by asking how did i know they were from VM and he told me how long I had been a customer, what services I had and the amount of my last bill. Seemed genuine.
However, I'm concerned if they send a router and it isn't a genuine VM one, they have a way to track any transactions I process online.
I called the number back after the call and got a recorded message saying I had missed a call from Virgin Media. Don't worry, the team will call you back' . That doesn't prove anything.
Was this a genuine call? Do I have to change the router?