SHOCKING online / delivery service!

I placed an order on Sunday. I was notified on Tuesday that the order would be delivered between 8am and 8pm. I waited the entire day and no one came. I sent an email to ask what happened to my delivery. I was told this morning, it was escalated. Today, I received a note/SMS to say that it's on route for delivery. I was in a meeting an unavailable. I advised that I would be back within 2 hours. At 3:15pm I got a message to say that my goods were handed back to the store. Between yesterday morning and now 5pm Wednesday, I have received in excess of 30 emails and sms's. Still don't have my goods. And if those goods have been driven around in a hot car for two days, they are probably off by now. I am very disappointed. The point of ordering online is to add convenience to one's life. This is a horrible nightmare. Makro - DO BETTER! And can you please contact me and let me know when I can expect my goods / arrange a time with me.