No response from SAA Customer Service

SAA made me buy a whole new return ticket from Zambia on 27 December 2015 because the checkin clerk at the departure desk made a mistake by converting my original direct departure leg from Durban into a flight to JHB and then on to Lusaka but did not create the return leg to JHB & Durban. This cost me R9300 and I was told to reclaim it upon my return to SA. This process has now been ongoing since 27 December 2015 - firstly to the incorrect email addresses that were given to me and a total lack of success in getting through to the customer care line ***. When I got my query through to the correct email address, I received a Case number and an agent to deal with it but to date have yet to hear from her regarding the matter. In the meantime the purchase on my credit card it generating bank charges and interest. Is there anyone at SAA Customer Care or do they also need a R 5 Billion bailout!?