TRAVELSTART CAN NEVER BE REACHED IN A CRISIS

I have been trying to change my flight for the past 3 days with travelstart. They offered a flexible flight change option that you pay R300 for and I have had no luck with changing the flight. There is no landline. The whatsapp line always has no live agents. The chatbots only do new bookings. Basically if you book with them do not expect help in changing your flight details even after you selected and paid for a flexible flight change option. I probably have to buy a new ticket because I can't even freeze or do anything with the other ticket. I am so disappointed. I have been using travelstart to book for most of my productions but I see its better to actually pay a travel agency than this