Kowloon Central Post Office

I was waiting for a package from the States and they tried to deliver it while I was out and about. I expected to see a slip of paper saying they will either try to redeliver it or I should go to the post office to pick it up, but I didn’t get either. After waiting another two days to see if they would deliver it, I decided to take matters into my own hands and just go to the post office. When I asked the lady about it, she said that they tried to deliver it but I wasn’t there but it’s out for delivery again today so go home and wait for it.
I ran home in hopes of not missing the mail man again. When the mail was finally delivered, I got the slip that said my package is waiting at the post office and I should go there to pick it up :(
With this slip in my hand, I walked AGAIN to the post office and retrieved my package. I don’t understand why the mailman didn’t originally put the slip in my mailbox instead of needing to MAIL the slip to me and I don’t understand why the lady at the post office told me that the package was out for delivery when it clearly wasn’t.
Besides the false information and ordeal of getting my package, this post office is just like any other post office.