Hi a few months ago a friend booked Naked Bus from Waihi and ended up having a 6 hour trip to Auckland; she said it was a horror story.

I forgot about it and booked my wife today to leave Waihi Beach to Auckland.
There was a $12 seat available for the same day needed, so went through the booking process.
There was NO mention of the route during the entire booking process and when I got to the invoice page the booking price had gone up to almost $20; a $4 booking fee, an unwanted cancellation fee of $2 (which only works for floods/war/earthquake/major events), an unwanted SMS fee of $1.30. After unchecking unwanted items proceeded to checkout and only after checkout found that the bus goes south to Tauranga then to Hamilton, then to Auckland taking 6 hours for a 2 hour trip.
Unacceptable for wife, so I changed booking to depart Waihi direct Auckland which cost another $5.99 booking fee change (same ticket price).

I suspect that since there is no hint of the unusual route prior to payment apart from '2 changes' that its against Sale of Goods/Services as they are hiding the product detail.
You can check the route by going to their Routes tab, but they keep changing their routes so you just dont know where you are likely to end up!

Its possible if you make a similar mistake that you can pay their wrought fee of $6 to change the booking, but you cant cancel booking once made.

Go Intercity and you cant go wrong!
Cheers,
Al