Unhappy customer - Travelstart

I made an online booking from return flight from Blantyre Johannesburg and return from Johannesburg to Cape Town late the evening of 19 September for the 19th of October. When the confirmation of payment came through I realised the flights was from Lanseria to Cape Town and not OT to Cape Town. I thought I will sort it out the first thing the next morning... The penalty fee for this was more than R800 and was only allowed to make the correct bookings on Kulula... where the times were not suitable. From the R1700 I have paid for the ticket, they were prepared to refund R249.47 and that will take 6 - 8 weeks. This was the only option I had as they apparently did not allow a name change on the ticket as well. I have always made used of Travelstart in the past, but never again. This was an honest mistake and I reported it within 12 hours after I made the booking (as it was not during office hours). The booking/mistake for the booking was more than a month in advance was really hoping that they will be more lenient to assist. The thing that really blowed my mind the most was the penalty fee. It feels like ****************. Just to give an idea. The ticket was Blantyre to Johannesburg not to OT Johannesburg. Therefore the next option Johannesburg to Cape Town and then you realist it is actually from a different Airport is confusing.