Poor service delivery by SAA bookings & refund department

On the 15 th of January I’ve booked a ticket for my son (unaccompanied minor) from Brisbane Australia to O R Tambo South Africa. On the 19th January 4 hours before his flight he wanted to check in but was unsuccessful due to SAA that did not have permission from Virgin Air Australia as they where Flying the first leg to Perth. It took me a whole day to sort this problem as my son was sitting on the airport. The team leader at SAA got this problem almost resolved as we needed to book another flight for my son through another air line on my cost. SAA team leader sent me a email stating that they would refund me for this new flight arrangements that we needed to make. We send her all the required documents and as per her email it would take at the most 40 days to refund. At this stage we need to contact on a daily basis and as per the team leader’s promises she would call back and sort this refund situation but never do. I did send an email where her manager is also copied but still no response. It is more than 50 days and still awaiting the refund or response.