Bad customer service

At the shop at about 16:50, was on the queue and a white guy paid at Mahlatsi’s till after he paid, I went in to pay. Mahlatsi left me standing there and never even looked at me and tell me if she’s coming or not. She was busy with her things even moping while the lady who was on the next till was attending to the customers on the queue. I then asked the lady where is Mahlatsi and she told me to come pay at her till. I asked Mahlatsi who was busy cleaning or mopping why she left me standing like a fool at the till. She answered with an attitude that I was invisible to her. I told her she’s rendering a poor customer service and she said she thought I was just resting. Hod forbids, I was standing on the queue to rest in front of her till. I asked to see the manager and the manager who seemed not interested said “sorry” and carried on doing what she was busy with. The manager and Mahlatsi need thorough training. Customer service is not important to them and treat customer at face value. The manager refused to give me Mahlatsi’s surname. I even tried calling customer care and unfortunately it was closed. She wanted to knock off as they were complaining that g4s are coming in late to collect money. I am very angry and will tell everybody I know about the bad service I experienced today