I have and am paying for Verizon HS DSL with download advertised at 1.5 - 3 MB. Regularly on evenings and weekends, it slows down to between 0.1 to 0.6 MB and tonight went as low as 0.02 MB!
Whenever I call to report the problem, support asks me to repeat all the same old tests I've done before...what's your modem, what's your router, what's your OS, power off/on, check setup, ports, ya da ya da, etc. This ends up with, I'll have to report this to my supervisor and someone will call you later. They call in the AM and guess what...download speed is now just over 2 MB so no problem. Thank you Verizon support, but the problem will return sometime after 6:00 PM within a day or so. Well, call us when it returns and we'll look at it again...arghhhhh. Usually, the next time I sign on in the evening, the same old problem exists.
You would think that when you've reported and they've tried to fix this two or three times, Verizon would be able to monitor your sessions and test their own local equipment at the appropriate times and get back to you with a status which could be (1) problem verified to be at our end and it's been fixed, (2) problem verified to be at your end and we need to relook at your stuff, or (3) problem verified at our end (maybe a shortage of local bandwidth or ???) and you'll have to live with it for a known or unknown amount of time.
I noticed that the Verizon web site has changed and now says that high-speed internet is not available at my location. I therefore suspect that Reason (3) is the situation for me. I'd be willing to wait at least a year for better service from Verizon but if I can't get a status from them, I plan to look for another provider.