I also replied to the other thread... Anyway, I tried calling and texting but didn't get through and the phone just rang. No replies to texts, neither.
Not going to claim that they're not genuine, but I didn't have any luck. No PG to subscribe to, so that isn't their angle - but I don't know what is. I may try again later in the week.
Feel free to give it a go, though. And let us know