Ticket Refund

In March 2020 I booked DMJ bus from King William's Town to Johannesburg. Due to Covid all transportation for long distance where canceled. I tried to contact them about refunds and explained in my email that my ticket was lost with my purse. I paid cash from usave/shporite in Easter Cape. They do not want to refund me my money due to the loss of of my ticket. I'm willing to write affidavit that I did buy the ticket but they are not willing to cooperate with me for a refund or may be give me something that I can be ok. I was at the station in King William's Town there were no busses.