Update: I visited the store this afternoon when it was not so busy and met with the store rep who I'd originally emailed the day I discovered the count issue. After checking the shutter count to confirm, and ooked at my two cards. There was no question over my use of the camera while overseas, and he indicated that was entirely reasonable. He was able to confirm from records that a demo model had been sold to me without my being advised. He apologised and replaced the camera with a new unit, which he guaranteed had not been a demo model. I kept the accessories from the first camera so at least they had a new set.
This was a model of customer relations, carried out with no acrimony whatsoever. I had made no demands or voiced any expectations as to what should be done. I was most impressed, and chose to then spend some further money in the store and was even given 20% discount on that spend.
Auckland Camera, Kingsland, Auckland - well done!