I should add that when the 4 parcels went missing last October I asked the staff at my local PO if they had received any other enquiries/concerns from customers about missing parcels and explained that situation. The staff had received no other complaints from customers, now of course it could be that the complaints were made to the main customer service line and not the LPO, but I thought that was interesting and confirmed what the AP rep had said on the customer line that there had been no 'critical incidents' reported. Both these things indicated to me that there had been no van theft, LPO break ins, no hijacking of vans, no crashes, no van fires, all things that could happen and would account for lost parcels. 

Given all that and the fact that all 4 of the parcels lodged that day, I surmised that perhaps it was an employee about to leave and they took some freebies. Given that I thought it unlikely that it may happen again, so when 2/4 went missing last week, and again no scans whatsoever once lodged in to the LPO I became very worried and anxious because you cannot run a business with that level of risk, especially when some of my items are in the $3000 range (average however is likely $200). 

I haven't just jumped to a huge conclusion here, I spoke to about 3 customer service reps in October and November about this issue, as well as the LPO staff and all of them confirmed that this is unusual. I would guess that since October I have sent perhaps 60 parcels, maybe not even that, and 6 of those have just 'disappeared' without a trace or scan ever again. I would say that is a pretty high lost rate.