Request of refund from Flysafair

I booked two tickets to East London and 2 tickets from East London to Cape Town, my husband and I had to go to Eastern Cape to sort family issues. On Monday night Mr President announced 21 days lockdown, I was confused because we had to travel the following morning. I phoned the call centre, and reached the voicemail saying they operating from 07:00-19:00, I sent emails same night requesting about refund because we had to cancel as we would not be able to come back the following week due to lockdown. In the morning I kept trying to call them, could not reach anyone, the machine stated that they experiencing loads of calls due covid19. I sent a message on WhatsApp. To cut the story on the 24th I went at the airport to request refund and I was told I will only receive refund for the tickets coming from East London to Cape Town, because I should have come on that day of travel so now it looks like we missed the flight according to guy who was helping, therefore the money is forfeited. I explained to the guy that I tried t phone, I sent emails too, even WhatsApp, he said l must go online explain what happened maybe they will assist me. I tried but I was unable to do it online. I feel like this is unfair because no one knew about the lockdown, I lost R1800 and some rands. All I am asking is a refund.