Complaint about Extremely Bad Service regarding my ticket

During the interprovincial lock down, I could not travel from JHB to CPT. My ticket was scheduled to be used on 30th June 2021. I could not used it, I called Kulula contact center I spoke with Razia on the 26/11/21 and she confirmed the ticket and the change that is supposed to be done. She told me that she need her Team Leader to open the ticket as it reflects as used and promised to call me back nothing happened. I then called again, the call was answered by Noxolo that was Friday the 3rd December, she told the same thing about the ticket that need to be opened by the Team Leader gain and promised to call by the end of the day. Again nothing happened. Today I called again spoke to Godfrey who really promised to get to the bottom of my query and did not want to disturb the process because was of the view that his colleagues have started with the process, however I waited the whole day nothing happened. I am definatelly not happy with the bad service I am receiving. Can some competent please assist with my query.

I would like to enquire about my ticket, I would like to be changed it to 14 December for any flight after 15:00