Pick n pay asap and they're call centre are frustrating

They deserve a zero rating I did shopping at Pick n pay asap and among the items I purchased they was supper for my kids. When I paid the app was saying my order will be delivered in 60mins. I waited for my order almost an hour and half and I went back to the app, the delivery had been changed to tomorrow. I contacted the call centre and I spoke to Lisa and explained to her that I needed the order today since there was supper for my kids and that was the last money I had. She said she was going to call Pick n pay Brackenfell and get back to me of which she never did even though I had explained my situation to her. Pick n pay, I'm very frustrated, Lisa mentioned that the app has a faulty it can not read when the shop is at full capacity. Is that my fault? My kids has to starve because of that? Lisa your lack of urgency and not willing to help is very worrying. Your call centre just don't care it's just a job to them which is very worrying