Sa Post Office Sucks

I like buying things online and in the past year I have had to continously be aware of what I'm buying and from where which sucks!!!! I can't buy anything from overseas anymore because once it leaves Or Tambo airport to post office, it disappears. The company where I buy my piercing accessories has had to refund me once and now they no longer supply to South Africa due to packages disappearing. You can't track the package on the post office website because it doesn't work and who do you call??? I have been waiting for months for pills I bought online and it's the same story, the tracking stops once it leaves the airport. It's really upsetting because that is lots of money lost!!!