No response cancelled order #716869

I ordered groceries to the value of R1100 on the morning of 13 May 2020 for delivery on 15 May between 11 and 12. I checked on the order status the evening before the day of delivery, it was still showing order received. On the morning of the day of delivery the order status was still the same. Called their customer number but all lines were busy, agents unavailable. I sent an email but it came back undelivered. Seconds later I got an automated response with a reference number and that an agent would contact me. By the afternoon I decided to cancel the order. Tried to call again on the weekend, no answer on their lines. Sent a request via the app and got another reference number. Still no contact from them regarding my order cancellation and refund. This is the worst place you could ever do business with!