Dealing with SA Post office is so so frustrating!!!

I am absolutely frustrated with my experience with the SA Post office.

I ordered an item from Amazon. They sent it and gave me a tracking number for SA post office. I use the website to track it, it says delivery failed. I have no idea what that means and why?? It never came to me and was never returned!!

I tried contacting the post office via the email provided on the website twice and never received a single response.

I tried contacting them via their contact number on the website, no reply other than the automated message that goes on for 20 mins on each call till u get fed up and put it down.

I tried calling about 5 times each time i waited for about 20 mins for a response. Thats more than an hour wasted waiting for a response and i still cant track my parcel!!

Absolutely frustrating!!