pjamieson: When the issue is happening, double check you connection speed on your modem hasn't dropped and run some speed-tests and log it with Orcon, based on what you find it will either be a physical line issue or something to do with their backhaul, as others have said.
Otherwise UFB comes to most of the area between Jan - Jun next year.
It never drops. I have contacted orcon but haven't heard from them for a while. UFB comes to my street in 2018 :(