Aww Dads Army was one of my Dad`s favourites, as was Last of the Summer Wine and I can`t watch re runs of either of them without going teary eyed. My Dad wore hearing aids and even with the aids his hearing was poor. He`d pull his armchair to within a foot of the TV and he`d be laughing his head off but the rest of us would be deafened by the volume.
As for internet, phone companies etc, we changed to Talk Talk and it was the worst thing we ever did. It took months of phonecalls to them, around 6 visits from engineers, new routers and even our own personal named CS Manager who gave us his personal mobile number before we finally got the service we were paying for. It turned out to be a hardline fault on the wires from the telegraph poles, caused by corrosion but it took them about 8 months to find out.