I got a question where the story goes like this:
Sender A sent the package (item I) on Monday 25/06/2012. I got another sender B sent me 1 package (item II) on the same day (25/06) and 1 package (item III) the next day (26/06). I received a note to pickup item on Wednesday (27/06). I found out the item that the postman try to deliver on Wed is the last item (item III) which sender B sent out on 26/06. So I provide the tracking number for item II and collect it too.
The problem is sender A lost his poslaju slip and cannot provide me any tracking number. And I never received any note from postman on 26/06.

So how can I collect the package (item I) without tracking number??