FlySafair pathetic service, leaving passenger stranded, no refund after 4 months

Dear Flysafair,

you have the utmost pathetic service!!! No service whatsoever to your customers! On 22nd June I booked PKVLCO and paid for my flight, changed later dates to the 26th July and paid for it but on the date of departure the flight did not appear on your system although I had all the bookings and payment slips. No service here to start of with and assistance to sort it out at the airport I was just left stranded!!! I then had to book, at the airport, the next available flight with another airline. Now since that time I am asking for a refund of my paid ticket and the difference to the new ticket I had to purchase at the airport that day which obviously was more expensive. Despite the inconvenience, late arrival and costs since, I have not heard once we are sorry for what happened and the most decency in refunding me. Numerous calls and emails all I hear is "system glitch" we cant find the changed booking although you note both payments! I have sent you all paperwork and new flight ticket I had to purchase and still nothing. Things do go wrong, not just at your airline and around the world, but other airlines are quick to resolve don't leave you stranded as a matter of fact they sort the problem out, give you vouchers, lounge access whatever it takes to make up for it and make your trip as convenient as possible, making up for the delay and inconvenience, not at FLYSAFAIR! I have booked for the first time and will NEVER booked again with your pathetic airline. Hence we are now in October, 4 month later, In have issued summons against you, this is how you treat your passengers.