FLYSAFAIR FRUSTRATIONS

I booked a ticket online and paid for insurance to change my flight. I discovered that a one way ticket has no refunding back if I cancel my flight. Although they gave me the option of insurance on my one way ticket. Changing the flight ended up costing so much that I eventually cancelled the flight, lost R300 and got a voucher. I immediately rebooked a return trip. It gave me no option to use my voucher. I continued to pay through the safe FlySafair portal Ozow. The payment went through at my bank as an immediate payment . I received a receipt from FlySafair that I have not paid and my booking is pending . My bank verifies the payment went through. For the past 2 days I have been trying to contact Safair to no avail. Lindi, their AI assistant is of no help and refer me to the call centre. I spent 2 days calling. No one returned my call. I cannot find any assistance . It has cost me so much money and I am without a ticket and lost a lot of money and time in the process. Lindi seems unable to assist. How can I go about to get a hold of FlySafair. I dont live near an office. I have no idea how to procede