Bad Service 😞

We cancelled a booking and was given numbers to contact for a refund. None of them are being answered. I have spent more than R500 on airtime trying to get hold of them with no success. Their email addresses bounce back. They are not answering on their social platforms as well. The staff at the Cape Town International Airport are not helpful as well to answer regarding my refund. It has been 7 days already. Their chat bot is automated and does not have much options. At the moment, I have no idea how I will be getting my refund from them. I paid a return ticket costing me about R2800. At the moment I am about to go and open a case against them. I left messages on their social platforms but haven't heard back from them.