Pick and Pay online - absolutely pathetic service

Absolute pathetic service from Pick and Pay online. I placed my order on Monday 11 June for delivery on Tuesday 12 June ********** On Tuesday nobody arrives and I eventually decide to phone the call center at 18:30. The customer service agent tries to assist, but nobody, not even the hub manager can get hold of the driver. She then attempts to reschedule the delivery for Wednesday 13 June ********** Still, nobody arrives and again I have to phone customer service to understand where my order is. After holding on the line for almost 10mins, the agent tells me that my order was never put through to the order center and therefore was never packed??? How did they not see this yesterday? They will have to reschedule my order for delivery tomorrow - she will call me back with more details. After I tell them that it's unacceptable and that I need the groceries yesterday already...she phones me back and confirms that they will delivery today (13 June) between 11:00 and 12:00 (not sure how they somehow miraculously found my order and was able to pack it in time). It is now 14:00 and still no delivery???? Not sure what else I'm supposed to do? Clearly nobody know what's going on nor can they solve the problem. Furious!! I'll have to wait and see what time and when Pick and Pay decides to pitch up.