Lost order

I placed an order on monday (8 dec) on the website but tracking details didnt change. But 2 days later (10 Dec) when I track the Item it had changed to complete with customer - Called Hfi to enquire but they told me its with the courier I should wait because delivery takes 2 to 5 working days. Today (12 Dec) I call to make a follow up nobody knows where the package is. And a complaint has been opened - but shouldnt the case been opened yesterday? Now I have to wait 24 working hours before the investigations department will give me a call. What must happen in the meantime?

this is the second time something like this has happend with Hifi Corp.