Checkers Sixty60 shocking service

During this new wave of the Covid pandemic, one tries one's best to stay out of the shops. I placed an order for 10 items on the Checkers 60 app for delivery today between 11-12noon. Shopping started at 11 and ended 11h30 but I was then emailed by the team to say my delivery was running 30 minutes late and I could expect it around 12h30. (I live 3km from the store). When it arrived the driver was on his bluetooth headset, connected to or under his motorcycle helmet, on a personal call which he never suspended to attend to me. Upon his departure I noticed 2 items I needed most (Jik regular bleach and Mr Muscle) had been omitted from the parcel, despite the store confirming it was in stock and had been dispatched to me and I had paid for it! Calls to the store result in them referring one to the sixty60 call centre who them tell one to log the issue on the app after doing so one gets an email of acknowledgement from the sixty team to say they have high volumes and if it's urgent one can phone them which i then did only to be told to log it on the app. I told them i had already done so but it was urgent and needed the 2 missing items today. The response was to tell me i would not be getting the items as they don't deliver missing items, they investigate the matter and if deemed valid...a refund is made. No indication of a time line, no delivery of the goods i desperately need...a totally frustrating experience all round. I told them to go learn how to deliver an efficient, customer friendly online shopping service, from Woolworths because sixty60 doesn't hit the mark at all.