And to everyone else constructively commenting, thank you for taking the time. For those of you who tell me to just move - that is not a helpful, constructive, considerate or practical answer. The business is farm-based. We can't move it. There would be no business if we did.
There is no fibre - I'd spend $10k without batting an eye if I could get it (not that I should have to pay that!).
We have explored and do use fixed wireless (802.11 based), but it has not proven robust and reliable enough and it requires significant on-going monitoring/maintenance and will go down unexpectedly. We see inconsistent throughput, latency spikes that break things like skype and accessing cloud-based order processing and accounting packages. Furthermore, it is affected by rain fade and power outages and that's why we have to to pay for TWO connections. I use traffic shaping to combine the two connections. The ADSL is used to reduce the load on the fixed wireless and to allow our software systems to keep running during business hours when the fixed wireless fails entirely and/or can't keep up. When both go down I have staff that simply cannot do their jobs and have to look for odd projects while they wait for the internet to come back. It's demoralizing and frustrating for them as well.
Vodafone and Spark do not have adequate coverage. We get 1 bar of 4G/LTE coverage at best and only in certain spots. So that is not an option.
The ADSL was enough to limp along when it was 7mbps and I had hopes that perhaps someday they would shorten the loop or improve the infrastructure so that we could get VDSL. If I could get a stable 10/5mbps connection over copper/fiber life would be great. Instead we have gone backwards down to <4mbps (usable) and now it seems like they are considering abandoning the infrastructure.
I would have thought there was some government legislated requirement for them to provide some basic level of service.
From what you are all saying here it sounds like Chorus could just decide it is too expensive and cut us off entirely. Maybe that's their hope - that we just go away. And I would, if I had other practical options.