Shocking online service

You place your order online and need to make payment in order for it to be delivered. You are told the delivery date and that is never met. In this instance my order of R6000 + was held back because of one item not being available. No one at Makro contacted me to advise. I had to follow up. Then I told them to cancel that item and I will request a refund. When following up for my order again I received no response. Then I got a phonecall early on Monday asking if I am available to receive delivery today which I was but then no delivery. I phoned the online help which they told me that they cannot get hold of Makro Montague Gardens to find out about the order then I was told I must try phone them. I phoned once and left a message. I had no response. I phoned again 4 times later. Each time the phone was cut off. I sent two or three emails and received no response. I am still waiting for a response.