Inyathi Appliances Slippery Snake

On the 3rd of Feb we bought a Samsung Oven and Hob from Game, we had it installed by an electrical company and it worked for less than 2 weeks and the hob has now stopped working, I get a call from Inyathi Appliances who do the work on behalf of Samsung they come and look at my hob and say its been placed in with Silicon and that voids the warranty, I read through my whole manual/install guide and warranty and nothing states that, when i call them back and speak to some one who seemed to be a manager, i then get told no the brackets where not used, I then state to him no where does it state i must use the brackets or warranty is voided, he then changes to a new direction, the tech said the hob is not wired correctly to the oven unit, i then said that's okay that i understand but i had it installed by an electrician please can you send me some kind of report stating this and that's the reason my warranty is voided , the reply, we will then have to come out and reassess the work and it will cost you R400. I am so disappointed every appliance in my house is Samsung, I would love it if Samsung could show the same loyalty back to its customers when things go wrong