Poor online and fulfillment purchase

Long story short: Ordered and paid for items only available on Makro online store on 26/06/2018 (order no. MAK888293). Order included payment for courier although I always prefer collection at the local Makro store, but as this was via the online store, collection option was not available. After 5 days item was still not received and on the 09/07/2018 received an email that supplier is out of stock of purchased items!

A few questions I have: 1. Why does Makro accept orders (& payment) of items NOT available on inventory? 2. Why did it take 2 weeks to be informed of the order problems & the out of stock situation? 3. How long will it take for the refund? (it literally took 3 secs to come out of my banking account) 4. Why is collection of ordered items from the store not possible? I could then have just bought it from the supplier directly as the costs would be about the same?

It's unacceptable that in this technological age we can't even get a simple order right, how does Makro want to compete in this market with such poor service.

Very hesitant to pursuit further online deals!