Bunjil: The cache would appear to have been abandoned - taking the next step and de-listing - sorry.
If the CO can't do me the courtesy of responding to my enquiry, then I have no choice but to assume there is no longer any interest by the CO in this placement and they have abandoned the cache.
If there are components or remnants of the cache and you haven't already done so, please return to the GZ and collect the cache (or remnants). We don't want to litter our environment with Georubbish.