Poor customer service

I was at the Shoprite in Philippi yesterday (28 April) and was confused when our queue just came at a standstill. I thought maybe a customer was holding up the line but when I looked the lady was done paying and packing her trolley. I thought let me just wait this happens all the time during pay weekends, she probably forgot something. This was just after 1pm. I continued being on my phone to pass when I realised 15 minutes later the line is still not moving. The child of the lady behind me came back saying our till has a closed sign that's when I looked up to see what she was talking about. I asked the customers in front if they know where our cashier went and they said no. All she said was she was closing and left. I went to the manager's office and reported we have been waiting for a while now and our cashier left without notifying us or having someone else assist us. When the guy I spoke to came to our till (14) all of a sudden her neighbor at till number 15 said she was left to attend to Jackie's till. I quickly jumped in and said we have been waiting to get assisted a good 15 minutes and you have not called anyone from my queue so I don't understand why when a senior is present that now you have a voice yet when people kept asking why our till is closed you were quiet. The guy from the managers office apologized for the lack of communication which I appreciated and after speaking to him all of a sudden our line started moving. Just before half 1 it was exactly at 13:27 our cashier came back. When I got closer to the front I could hear she and her till 15 colleague gossiping about customers who like to complain about "unnecessary" things. When I got to her she didn't even care that I knew they were talking about me. When I was putting my items on her till they fell because I was is such a rush, at home they were already calling me asking whats taking so long and that the family friend that I asked to wait for me needed to go. I asked her to please wait for another few minutes cause they was a delay in our queue Anyway all the cashier said was your items are falling instead of just helping me. She had an attitude like I should be grateful that she is back and get over having to wait for her for almost 30 minutes. She went as far as saying it's our fault as customers cause she reported and it's not her problem the front customers didn't relay the message and that I could have easily went to another line. I told her that would not happened when I was so close to the front and choosing to go to a new line where I'll be right at back because now that it was in the afternoon all queues were long so what she was suggesting didn't make any sense. I even said I expected you to apologize and even lie about being sick or something because you took way longer than usual for someone who went to the loo. She even had a mask so she could have easily **** about being sick but no she rode her stank attitude and her colleague at till number 15 was busy looking back and laughing up a storm. Your colleague was wrong and is disrespecting a customer and you find it funny that ****ed me off and I knew I was going to write a review. This is not the first time and I'm sure it's not the last time we will be receiving poor customer service at that shoprite but I want that Jackie cashier of yesterday to be dealt with