Got a call from two numbers. He called again after I put the phone down the first time.
Said he was from Virgin Media's technical help department and wanted to inform me of "fluctuations of Internet" and wanted me to give him information about my router and then get onto a device and give him speed info which I didn't do.
He seemed very aggressive and quite rude. I said I would call virgin directly and he didn't seem too keen.
A quick Google search didn't bring anything up so just wanted to confirm that this was some sort of phishing or was it just an overly rude virgin employee?