You ain't seen nothing yet
Oh, yes I have. I'm in one of the states where AT&T sold the landline business to [ugh] Frontier Communications. Frontier's concept of "high speed internet" was a DSL line traveling over copper and delivering 2.46 mbs download speeds on a good day. And a good day would be a day when the DSL connection only crashed once or twice in a day. Last summer, I was seeing brief (meaning measured in seconds or single-digit minutes) outages multiple times every hour. Frontier's "technicians" came multiple times, verified that the problem wasn't in my house or in the wire between my house and the street. They said the issue was an antiquated SLICK (sp?) at the end of my street, about a mile away. And, they told me off the record, there were no plans to upgrade the SLICK.
As much as I loathe and detest the cable company that serves my town, at that point I gave up and signed on for cable internet. Now I'm seeing download speeds in the high 80s to low 90s. Not quite as fast as I had hoped for but obviously a tremendous improvement.
On the phone side, thanks to a friend commenting that when she tried to call me she got a canned, female-voice announcement rather than my customery answering machine, I discovered that Frontier had for some reason enabled a voicemail box on my account -- without asking me or telling me. And their voicemail was overriding my answering machine, which explained why I hadn't seen any new messages in longer than I could remember. I'm guessing that they made the change when I cancelled the DSL service in September, but nobody at frontier has any idea who authorized the change or why it was made.