Defective product and pathetic customer service

I purchased a piece from them on 01-10-2017. Received the watch on the 5th. It did not work. I contacted them immediately and was told that the specific model I bought had not given them any issues before, but that they would call the next day and arrange for it to be returned. Nobody called. I whatsapp'd them again (all whatsapp's can be made available), and I was told that they were too busy to call and asked whether they could call then. I said yes, and still no call. Matt himself chose to whatsapp me then on a Sunday afternoon to ask me to rehash the entire ordeal, only to go silent and leave me infuriated on a Sunday. I took it up again with them on whatsapp on the 10th and was told that their staff had been dealing with personal situations, and that's why I've been given the run around! They eventually arranged a collection at a Pargo(their chosen courier company) outlet that was completely out of my way. I contacted them and asked to change it to one that I had taken the time to allocate on their partner's website. On the 12th after more whatsapp's they informed me they had made the change for the drop off. The change was incorrect despite me having texted them the branch to change it to, they changed it to a completely different one and then proceeded to tell me that this was the only arrangement Pargo could offer. I called Matt Arend obviously annoyed and frustrated, and dealt with Tina who expressed that she did not have to deal with my **** and slammed the phone down on me. I called Pargo in Cape Town myself, and within two minutes made the change. Dropped off their defective product, and to date have not had a single call or any correspondence from them. Highly unprofessional bunch of people, hopelessly inefficient and just an all round nightmare to deal with. The product is also of ridiculously poor quality. Stay away from making online purchases with them, you will lose money and hit new heights of frustration!