pathetic service

I would like to lodge a formal complaint about the service i received at this particular pick n pay thabong sebokeng . I had the worst experience from the teller when i wanted to purchase omo auto washing liquid that was on the sale table, i took 5 bottles and only 2 of them had the red discount sticker, i was refused to buy them all or would have to pay the original price, i asked them to then place the sticker but was told " no", they can only place the sticker when they ready not when i want it, i will have to wait for whenever they ready. i asked to speak to the manager and she told me the same thing! so i went to my car waited there every 15 mins to 20 mins will go back in to check after an hour i finally managed to purchase them . I am disappointed with the service; the amount of inconvenience caused was immense because of the delay.It was extremely disheartening that I could not receive the assistance I was politely requesting. My impression of that Awful treatment has tarnished pick n pay as a brand. its a great concern to me.Such behavior not only claims the rights of the customers, but also basic ethical and moral standards as well. This attitude discredits the head management of the company in the eyes of customers and is unacceptable.