Lack of customer service at Witkoppen branch

I have just been to the Witkoppen branch and experienced a \useless"teller who was of no assistance. First I could not get the fastmail envelope I was looking for and had to pay for a larger one. Not that I mind because I needed to post the item to Durban. I then asked her what is the postal code for Overport. She just said to me I don't know and then threw a book of post codes to me. Mind you"