No customer service

I ordered an item from Zando and Courierit were to deliver on Thursday, 29 March 2018, I then received an SMS and email at 18:23 to say that my item could not be delivered due to an "address problem". I received the very same service from Courierit some time ago and had to contact them myself to find out what the problem was, whereby I was told that the drivers do not use GPS. Today, (03/04/2018) I again phoned to find out why the item was not delivered and spoke to Abigail. I told her what the problem was and she just kept saying okay, okay, okay and could not provide me with a proper solution or reason. A waste of my time and the fact that I had to call them to find out what the problem was. I then asked to speak to her manager (Quinton) who was unavailable (conveniently). I was then transferred to Thandi who took my details for the manager to phone me back. I have still not received a phone call or my item. Today another delivery took place from the same company and the courier guy phoned me to make sure he was at the correct place. I am horribly dissatisfied with the service received and the inconvenience caused.