valtam:So I called the sales advisor but he said I could only get ADSL. However, I can get excellent 4G mobile speeds from the same location. A little confused now :(
Yes they're correct.
This will be due to the lack of capacity or you are in a rural area. If you are rural then your options are either ADSL or 4G RBI. 4G RBI providers are both expensive options however they are an option. You won't get One NZ FWA as you're not in the right area. You'll only get referred to RBI(Farmside in this case) if you wanted it served via 4G.
As per my previous post the other reasons why you would not be able to get it is simply due to a stop sell in the area as we need to also give mobile users a decent chunk of the pie too.
My apologies that this was not the answer you're looking for, however the plan(the provider and what they can offer) is very much the first thing you need to nail first before planning out your network topology.
You need a proper FWA solution and this sounds like you're in the RBI area so if be looking at 4G RBI providers for that FWA solution (i.e Farmside) or the alternative solutions such as Starlink.