worst customers service

We bought the TV in December 2014, and on wednesday November 25th we tried to open it and there was sound but no picture. We called right away since we were still under the one year garanty, impossible to get someone to answer, when they finally called The lady said someone would call to schedule an appointment with a technician. Noone called so we called back on the monday, they say the had to order a part, without even checking the tv, and that this said part would take 2 weeks to arrive. Then some dude came a week later to check it out, and told us there was nothing to do with it. He said that he would file his report and send it to Hisense, for them to contact the store where we bought it and that they would give us another. So, a week later, still no news. We called 5 times, impossible to get to speak with someone, so we wrote to them via email. The lady wrote to us that they were still waiting for the part to arrive since it hadnt been 2 weeks yet. We then wrote to her that the technician came(a week before) and that he said that there was nothing to do with it, and that we could get another tv. She never wrote back. We tried to call, it seems like noone works there.