poor poor service -and no feedback after logging complaint

Good day , Please see below I am disappointed and disgusted by the service I received on the 01/05/2022. I got to the airport 15 minutes before my flight departure time. I was advised that I missed the flight which was pure nonsense , I was advised by the lady at the boarding gate that I had to go on another flight or be on standby (mind you I was travelling with two kids 2 and 4 years ) I was left with no choice but to take standby option which was at a cost of R1200.00 for the 4 of us travelling . Is this your way of making extra money off customers . The agent who was supposed to assist was rather rude and dismissive and was not willing to board us to the (shocking) From being told I missed the flight to being force to pay an extra R1200.00 , I am dissatisfied and do not understand why I had to pay such a huge amount. I was not treated fairly as they could see I was desperate and had Kids with me ( No Care and no empathy what so ever), the amount of distress that was caused by Flysafair is one I could never ever explain . This is theft and a deliberate strategy to lure customers to book with you only for you to add additional charges If need be please view footage of time we arrived at the airport and also I cannot mention how disappointing it was to come back that same evening for stand by flight and be told “Sorry no availability “ no care no empathy – am still extremely disappointed and before laying a complaint on my socials and ombuds- I thought I would allow a member of management to investigate this matter – this not the first time I travel with Flysafair , infact majority of the time I use your services however this time around I am very dissatisfied to say the least