If anything comes out of this I hope someone at Telecom can review this process and make a tweak. And I am sure that is all it is.
Yet at no point have you raised "HD should make sure Chorus have their correct contact details" as the cause of your problems - you're constantly blaming Telecom's processes, which is decidedly unfair. Obviously now that this communication issue between Chorus and HD (and nothing to do with Telecom) has been found, it will be addressed to prevent the same issue arising in future.
I don't think any further value can be added to this topic here.