Pick 'n Pay ASAP - Pathetic customer service - Delivery failure

I placed an order late on Saturday night & paid in full, as to ensure delivery 1st thing this morning. The order was placed via the Pick 'n Pay ASAP app. This morning at 08:08 I received an alert that the store is picking & preparing my order. The order is seriously delayed so I sent 6 messages sine 10:08 via the chat function on the app. It is now past 12:00 so I sent them an email to complain. Every hour my order is shifted out one hour. Why is this and why don't they contact me to explain any problems they might experience with my delivery? This is disgusting and pathetic poor customer service from Pick 'n Pay.