You are correct, we have had no response from the Exchange.

The letter which was sent to the Exchange's registered office has been returned to us marked 'not at this address' (the letter was also emailed).  When we have tried to send letters in the past to the other addresses that we have for the Exchange and its directors, these letters have all been returned to us unopened.   The apparent absence now of any physical address for the Exchange is a concerning sign.

We have undertaken a search of the telephone directory to see if we could find a contact number for the director of Exchange.  Neither Colin Armitt nor Ken Armitt is listed in the area around Orange, NSW.  In fact there is no "C Armitt" listed anywhere in NSW and when we called the only "K Armitt" in NSW it turned out to be a 'Kym', not Ken.