Worst service from Pick n Pay

On the 30/01/2023 I bought an airline ticket at Pick n Pay and was assisted by a trainee. I told her that this is a returning ticket since I already bought a ticket to go to Joburg. She made a joke about leaving with me, I even said Im returning that day. She panicked and called her colleague to assist because she said she’s not fami**** with the ticket system, the colleague took over from where she left. Fast forward, they captured in the wrong route. When I went to them the same day, I was told that Im lying about what I said. They even said it’s 2 against 1 therefore Im the lying one. I had to pay an extra fee for changes to be made and also change my returning date to a cheaper one. All this wasted my money, time and energy. Im really disappointed as this was a store I always bought from. What hurts the most is being told by the supervisor that Im lying about mentioning the route from the first place.If I did not mention the route then why dont they probe clients? Worst service ever. I will never look at that store the same way again.