Recently had to phone Customer Services for my ISP. Broadband was down. No connection at all.
I'd tried resetting the router, changing the filters (I have five spare), changing the wire between socket and router. Nothing.
Rang them the friday afternoon. Explained the problem, and what I'd already tried. Patiently followed their instructions as I went through every single thing that I'd just told them I'd already tried.
They had me remove the socket cover and plug the wire into the 'test' socket. They tested the line, found no issues, and told me they'd pass it to the tech department who'd monitor the data for 24hours.
Annoyed, but resigned. I accepted this and was told they'd ring me back between 9am and 11am the sataurday.
3pm sataurday, they rang back and asked me if my connection was back. I said no, they ran through the same steps again and told me they'd pass it to the tech department who'd monitor the data for 24hours. I asked, weren't they passing it to them yesterday. Never got an answer. Said they ring me back sunday morning.
Sunday same thing. Finally told me it had been passed to the tech department who were monitoring it. An hour later they rang back to say, they would sort out an engineer and that the engineering team would call me monday at 12pm.
5pm monday, I got a call from the engineering team. They double checked a few things, but didn't bother running me through the stuff I'd explained that had already been tried. Booked an engineer for the tuesday morning.
Tuesday and the engineer arrived. Asked a few questions, plugged his gizmo in the socket, looked at the readouts and told me he was popping to the exchange as he was sure that was were the problem was. Said to be paitient for an hour and he'd ring me back.
An hour later, the lights on the router lit up and after a couple of false starts confirmed my connection was back up.
He then explained the problem was caused by a recent storm that had tripped a number of breakers and knocked a communications board used for broadband services out. He said it had affected about three dozen people, some of which were probably also amongst his appointments that day.
Even he wondered why no one had bothered to check the exchange after the storm when all those people we reporting the exact same problem in the same area.