British Airways is the worst

I was in Qatar on a tourist visa, which means before I got on the plane to Qatar, I needed a return flight home. The day before my return back to SA I tried to check in online and found that there was some sort of error and I didn't have return flight home. So I needed to book a new flight as my visa expired 31 Jan, the date of my return flight. So at 10 pm, 30 Jan I booked a flight on Qatar airways and left on the flight in four hours at 2 am, 31 Jan. No issues. I get to SA at 10am and I ask a friend if she could book a ticket from Jhb to PE. And she could only do that day, also noting that she is the one that booked my ticket from PE to Doha. Its cheaper to book it from Doha. Way cheaper. 50%cheaper. So I gave her the money and she booked it. She booked a ticket at 1pm, flight with British Airways from jhb to PE was at 4 pm. I checked in at British airways counter. All good. I get to the British airways boarding gate to get onto flight and they tell me that I cant get onto flight, I need to go to ticket counter. I get there and the lady says that credit card holder needs to call their call centre, and they wont give me any information and tell me to stand aside as they need to help other customers. Everytime I went back to the counter, I was seen by a new consultant, as they would walk to the back as I approached. The call centre said that I could not get on flight as the ticket was ********** because I bought it so close to departing time. And I wont get a refund and basically I cant buy a ticekt for the next flight, as I could risk the same thing happening again. I went back to ticket counter to get help. Nothing. I eventually asked for the manager,Thapelo, and he said that he cant help me, I will get a refund. But in 48 hours. I need to pay R2500 cash, but the last flight has already left. They cant do anything. He made me feel like I had committed a crime as this was a ********** transaction, which he kept repeating. ********** transaction. This was not the first time that tickets were bought for me with this credit card. I was stranded at jhb airport. So I had to find a place to sleep and buy a new ticket to PE for the follwing day. Alot of unexpected costs for something that was supposed to be so simple.The lack of customer service, is appalling and how, Thapelo, the manager at ticket counter was so be so rude and demeaning. Im so dissapointed in British Airways for this horrible incident.