How do you only have 1 teller working on a Saturday?

On Saturday 10th October I went into Mr Price Home Northgate. I had over R1800 worth of products that I wanted to pay for, and when I went to the tills, there was 1 person working. I was 10th in the queue, and after waiting 10 minutes with the queue not advancing at all, I put all my purchases down and walked out the store. I then ordered everything I wanted online from Temu. Well done Mr Price Home Northgate, you lost out on a R1800 sale.