Bad service from complaints department. No resolution just chased us away

Not impressed with the response time and email sent. While watching on the 55inch smart TV it switched off and on by itself and I noticed a black line on the left hand side which startes getting worst. I immediately put it off and we took it back to hificorp only to be told hisense will come check. Technician came and said physical damage? How miraculously can this be? We don't touch the TV nothing? Technician says you will hear from head office. Noone called and I get a sms saying completed repair? Waited a while and still no call back. We had to take the time and call you guys only to be told we cannot repair don't have the part? I don't understand this, we never asked for a repair? We just wanted a call to find out the next step? Was told send a email to complaints department which we did and get a short response with a subjct line **Without Prejudice**? Wow talk about great customer service here. Seems like you just want to chase the customers away then help. ***. Please sort this out. *** I posted this on Monday and still no response. What kind of service you'll are running.... We need a response ASAP! I will not recommend anyone to buy a hisense. No response from the complaint department, rude emails sent with no resolution. Contact me urgently ***