Continuing issues with my appliances bought from HiFi Corp NO RESPONSE FROM EMAILS

I bought a Pure Acoustics SBW-285 in December last year, since I've had it, it's been giving me issues with a crackling sound on the wireless subwoofer, every so often it will even make a loud popping sound. I have sent through request on Hi-Fi Corps customer service port on their website and nothing has been said since February. I took it into Hi-Fi Corp the Glen and they said they have to test it, this is their test, they put it on...nothing happened so it is fine. I have sound recordings and video of when it happens, they will not accept that as evidence enough to exchange it for a different brand of Sound Bar. Now, I bought a Brand New Sansui 49" 4k UHD TV, the remote on the Sound Bar interferes with the TV, if I press the volume buttons on the remote, it take me into the OSD and then volume down takes me to the time allocation and only when pressing EXIT twice on the TFV remote does it go away.

I cant skip movies on my TV because if I press the skip button, it changes the SOURCE on the sound bar....then I have to search the literally invisible LCD on the sound bar (because it is covered by the metal grate with small holes and you cant see the LCD or what you are doing on the LCD), I have to figure out what I am doing till I find the Line or Optical and trying to figure out the equalizer settings...

I am tired of sending emails to their client service, because I do not get a response and I will NOT go in "AGAIN" to test the Sound Bar which I have audio and video proof of and I want someone to advise on the extremely annoying interference between tv and sound bar.

There are many SBW-285 sound bars and Sansui TV's on the floor, you can test the interference I am referring to, especially when using the USB to play movies.

I await your response because clearly this is the ONLY way it looks like I will get through to you. This is an on going thing since February and the TV since Last month (Only bought the TV last month)

And I was at your business at the Glen Shopping Mall before the whole 6 months review thing the lady behind the customer desk was telling me about. My car is not running at the moment and it takes me 3 taxi's to get to you and R400 Uber when using Uber. and I do not want the experience of going through JHB with the sound bar and on every corner guys stopping me and asking me if I want to sell it or if they can carry it for me...once was more than enough.