Gavin, blame the contractors who actually built the new estate, not Telstra.
It is/was their responsibility........that all Services were pre-built into where you now live.(If you care to re-read your Property's papers, you will probably find that the papers do state that ALL Services have been 'included'.... in the price you paid, for your new property.)
Being such a new estate, Telstra doesn't know that your estate even exists ........YET!
The local Phone Exchange (sub-station).....has barely allocated enough racks, to accommodate all the phone services....of the new estate.
They (the sub-station) don't know that you 'exist', yet, either.
Six-seven weeks, and you are
getting messed around by Telstra, you say.
How many houses are there, on this new estate?
2 or 3?
10 or 24?
If there is no cable connected to it, check with your local Council.
You may find that you will have to get together...with all your neighbours (that's all who are already living on this estate!).......and, pay for the laying of that all important cable, yourself, in a collective manner.
That is, all of you will have to pay for your 'share'....of having that new cable laid!
Bill-wise, Telstra does NOT know that your Estate even 'exists', either.
Probably all those you have already 'spoken to'......may be thinking that you are 'trying to pull a swifty' here.....to register a non-existant phone, in a place they haven't heard of, YET, again.
And, are 'treating' you accordingly....as a 'prankster!
Have you considered that, Gavin.
Your Accounts (new and old)....are messed up, yes, possibly for that very reason, too.
(And, ooh, by the way, every time you request....a fix, yes, it goes down on Teltra's books as a 'job to be done'. Quite possibly you may get billed......for every call-out, as a result. Why? Because NOBODY at Telstra ever checked.....to see if there is a prior call-out!.....to your address, never mind let alone to your 'estate'...the one they believe DOES NOT exist, yet!)
Like I said, at the beginning of my reply......the ones you should be blaming, first of all, are..........the contractors who built your estate.
They are ones who built it WRONG (with the barest of Services!)..in the first place, in order to make a killing...on the Real Estate boom Australia is experiencing.
Ask them...what are they doing to fix your problem?
They'll say (the contractors)....you bought the real estate 'as is', as per your contract, the problem is ALL yours..to fix, not theirs, either.
Nice little merry-go-round you have got yourself on, Gavin.
Good luck with it.