Unhappy customer

I am very upset with the service i received from your Chatsworth branch. On Thursday the 29 November i purchaced two perfumes both of 100ml only to find out that one of them was 50ml. When i returned to the branch on the 2 December the staff and manager was very rude and unhelpful as the sales representative that sold the goods to me was not in. The manager told me that she needed to phone her to find out what transpired before she can assist me. This was an inconvenience to me as i did not have the time to wait in branch, so i told her i would return to the branch later that day as i do not have the time to wait. When i returned to the branch the service i received was **********. Firstly they have no ways of speaking to a customer and did nothing to compensate me. They wanted me to come back as they could not get hold of Suhana the sales rep when i explained that this was another inconvenience and that i needed to sort this out. When Berneece was processing a transaction on my account she refused to disclose what she was doing only to find out that they were going to charge me full price for an item i paid a discount on. Eventually i returned all items purchased. Just when i thought this nightmare was over, they followed me to my place of employment and embarrassed me asking for my personal details, Berneece from the Chatsworth branch demanded that she see proof of my name and accused me of lying. I am appalled at this horrific incident. This is the second time i experienced such bad service at this branch. Something needs to be done to address customer satisfaction.