Really bad quality product

I am highly disappointed in Samsung and the service I am getting from them. 3 months ago I bought a sound bar worth R18000. So for the last week I am struggling to get a display from the HDMI 2 port. It use to work perfect. Yesterday morning at 09:00 I phoned Samsung to get assistance on the device but the technical guys was to busy and said they will call back. They never phoned back. Last night I phoned again and spoke to a Lesego, now this guy should not be working in a technical department. First he does not listen to a customer and then try and find a fault on a T.V and not the actual Sound bar. This is the second high end device I bought of Samsung and clearly their High end product are not that high end as they always break with in 3 months. I am really disappointed in their service and their product.