samsung products a big joke!

This fridge was purchased on the 02/02/2014 from Dion wired in galleria. 3 months later fridge was faulty, went to Dion wired to complain they told us we need to deal with the Samsung desk at the store. They sent out a technician from Technifix who are the repair center for Samsung. The technician diagnosed the fault as the thermostat and was replaced the next day. 3 days later same fault occurs, same technician responded and claimed that the thermostat that was changed could of been a faulty one and replaced it the second time. This problem continued and the thermostat was changed again a total of three times in 10 months. i made numerous complaints to Dion wired who kept asking me to deal with Technifix, on the 18/03/2015 the thermostat was replaced for the fourth time including the freezer frame. this issue has been going back and forth between Samsung and Technifix for which both parties are not resolving the issue. On the 13/01/2016 the fridge was taken away by Technifix and was returned on the 21/01/2016 with a report saying NO FAULT FOUND. IS this the **** we get from such a big brand like Samsung. I will be taking this matter to the customer protection act.