Dissatisfaction from service centre and/or Samsun

I had a Note 3 on contract. During the 2-year period, my handset was booked in on 4 occasions (the last one on 9 October 2015). It is now almost 8 weeks and I have still not received a positive response from either the service center or Samsung Electronics. The main-board on the handset was changed twice and the LCD was changed once. At one point the sound was completely distorted.<br> <br> I then opted to communicate with Samsung Electronics directly and there has been someone who's been trying to assist. The last time I spoke to him was on 19 Nov and he advised that they were awaiting an exchange unit. I was also informed that it is not a new handset.....my question obviously was \What if I have any problems with the exchanged unit?"and I could not get a response.<br> <br> I am indeed very dissatisfied in the manner in which my query was handled. With having booked in my handset 4 times"