Lack of assistance from Travelstart

Travelstart literally cost me thousands of Rand thanks to poor guidelines and an inability to assist with problems. I bought flight tickets through them to France in December 2019, paying upfront. With Covid-19 restrictions I had to change the flight four times during a period of twenty months, every time paying admin fees to Travelstart. Eventually we were allowed to fly in October this year. We rushed to obtain our Schengen visa, PCR tests, Travel insurance and everything else listed we knew about. When we arrived at the airport we were denied embarking the British Airways flight as we needed a transit visa (information we did not know about as it did not exist the last time we travelled to Europe via British airways). Because is was on the same day of travel we lost the money we have spend on the flight tickets with all the flight change costs on the spot. This was in excess of R40k. We urgently contacted Travelstart, which is a mission on its own, whereby the consultant said it is not their problem or their responsibility to inform us as to what documents we need when travelling overseas. As I already paid for our accommodation and excursions in advance I risked losing more money, so I bought ticket through Air France, which cost me an additional R45k. I am disgusted in the way we were treated and expected to just write off money.