My last experience with India.
Internet down, TV & phone OK.
India: Reboot, wait 30 secs, etc, etc.
Me: Yes, all done. No change.
India: It's your router.
Me: I've connected directly before calling.
India: What lights are on the modem?
Me: I don't have a modem but there's a flashing green light on my STB.
India: You need a modem now.
Me: I'm not really sure that's the problem right now.
India: You need an engineer to fit a modem [arranges appointment].
Next day internet comes back to life so I ring to cancel engineer.
UK lady tells me no engineer is booked.