Bad Customers Service with 0% empathy towards customers

I was at Ackermans PortShepstone a few minutes ago and the service we received at the store was horrible. I can't remember the last time I experienced such a terrible service.The tills only had 3 cashiers working but only two cashiers were assisting customers who were there to buy from the shop. The other lady was only assisting customers who had queries. I understand that it's busy plus you have an amazing sale that we all wanna benefit from but what I don't understand is why did the manager allow only 2 cashiers to assist us.I spent +-15 minutes waiting to be served and when I finally got to the till the cashiers were conversing amongst each other, what kind of service is that?

Please have a look at this as this is not the kind of service we deserve or even expect as your valuable customers.