Worst customer service

I have never experienced such terrible customer service in my entire existence. I checked in online for my flight which was departing at 6:10 from Cape Town to Durban, we went to the customer service rep at bag drop at 5:40 to have him weigh my bags as I had overhead luggage, he gave me an attitude from the get go, his name is Siyanda Mketsu, he said we couldn't weigh our bags cause it was late. After I had passed the boarding gate he asked me for my seat number, he waited for us to get our bags checked and make our way to our boarding gate to tell us we need to go back and weigh our bags, when we arrived to him to weigh our bags as per his suggestion he told us we should go buy new tickets. His manager condoned his behavior, we understand we were at bag drop off at 5:40 instead of 5:10 but my problem is his attitude and the way he handled all of this.