Abysmal Pick N Pay response to botched PnP Asap delivery

I placed an order on PNP Asap on Friday morning with a 10am delivery slot. Someone else's order was mistakenly delivered to my house that afternoon. I have had no response to the email I sent on Friday evening, and have made multiple calls to your helpline, and to the nearest (Gardens) store, yet despite repeated assurances that the goods I ordered would be delivered, we still have not received them. Pick N Pay eventually collected the order that belonged to someone else, arriving hours after we were told to expect them, on Saturday afternoon. But it is now more than 48 hours since my delivery was scheduled to arrive and I neither have my products or a refund. Mistakes happen: how you respond to them is how you retain or lose customers. You have just lost this one.