Checkers Sixty60 Delivery leaves a lot to be desired

Placed an order via the Sixty60 app Thurs. 27 Nov @ around 8am selecting delivery period 6-7pm same day. Order placed and piad for; received confirmation email... all good until the "wheels came off". the delivery never happened and later the evening I checked the Sixty60 app on my phone and it showed delivery rescheduled for the following day at 11am-12pm, then a couple of hours later rescheduled again for next day (Saturday) 11am-12pm, instead of the original promised delivery of Thursday @ 6-7pm. I sent emails to <***>, and for every email I received an automated response message from Sixty60 Help Centre (with different reference numbers in subject line). I called the "help centre" at ***and after the second try got an agent. I asked to speak to a manager; he called me back, but (Aldo) sounded frustrated on the phone. He made one excuse after another, even going as far as blaming politics and societal issues out of there control. According to the convo it sounds as if this type of thing is NOT going to be resolved in the near future. Shoprite/Checkers (Sixty60) breaking its "promise" is causing a breakdown in the trust relationship between the consumer and the organisation. Without trust, your best price and product becomes worthless to the consumer, because without trust the consumer cannot believe that anything you say is truthful and honest. Rather under-promise and over-deliver, but when it comes to time, it's our most precious value item, don't abuse our time.