Post Office very inefficient

I ordered an item online which is only posted counter to counter. I gave Sandton Post Office, 2146 address. I went to the branch and they had already missorted it and sent it back to Wits Pos Hub. They claimed it will go to Benmore Post Office even though I gave them proof of it being sent to Sandton Post Office. When i track online now it is stuck at Wits Pos Hub and no one answers the phone at any branch or call centre. My tracking no: PE ********** 52ZA

I thought Post Office had improved customer service. Clearly not! and still employing rude clerks at their branches who are not interested in resolving any query.