Very Bad Customer Service

Recently I went to Pep,Primrose. And presented my Pep card to for points. Which I have done numerous times before, the teller didn't know how to do this. I asked her several times to call someone to help her which she didn't do, I have lost points on my transaction of over R700. The manager was within hearing distance and the teller spoke to her twice, I don't know what was said as they spoke in a foreign language. The Manager laughed and walked away!! I was understandably irritated, I used the figure of speech \you need to make sure your staff are trained\" and was absolutely shocked when the manager told me in front of all the other customer and in a very loud voice that I am speaking incorrectly and need to correct what I am saying. I was so shocked my mouth hung open. I tried get my point across but couldn't get a word in as she refused to stop talking and listen to my complaint and went on about my lack of command of the English language. I have been in Sales for over 20 years and would NEVER speak to a customer like that!! How can this lady be in a Manager position. "