Pathetic service from Makro Online

I bought and paid for a 1500 watt inverter from the Makro Online app on 25 June, which was outsourced from GadgetHubSA. I received the item at work on Wednesday 28 June via The Courier Guy. As soon as I was back in the office, I saw that it was the wrong inverter (1000 watt) and to be honest, it looked like a used item that was just glad wrapped. I immediately phoned the driver and asked him to come and collect it but was informed the instruction has to come from Makro. I then sent an email with pictures to Makro Support and Customer Care and phoned them to report it. After many calls and no success I decided to go to Makro Wonderboom Junction on 1 July to return the item. There I found out it can not be returned onsite and that I had to request a return online, which I did with the help of one of the consultants. I received an email on Monday 3 July to inform me that the courier had to come and collect the item again and once It has been assessed, they will refund me. The driver collected the item 3 July and I received an email to ask if I want to keep the credit or be refunded on 10 July. I provided the consultant with the necessary information and documentation but long story short, between the email and phone calls I am still waiting for my refund. This is the worst online service I have ever used and I am definitely not going to make the same mistake again. Maybe they should take a closer look at the way TakeAlot handles their clients and refunds? They can learn a few lessons from them.