Samsung cant fix it !!!!

I bought a fancy home entertainment system from Dion Wired Greenstone about a year and a half ago, with the extended warrantee, The unit is still covered by Samsung SA, I have had it in 4 x first 3 times came back NFF (No Fault Found) the 4th time it wont support a Blue Ray! the unit plays a DVD no problem, when I put in any Blue Ray, and I tried quiet a few it plays then after a few minutes it goes Black with sound, then the picture comes back, it does this throughout the movie. I even got my son to record it.<br> <br> now I have been driving back and forth and they still cant fix it, they refuse to credit or exchange the unit, its my time and money running back and forth because they cant repair it!!!!<br> <br> Catch a wake up Samsung, your Repair agents are making your brand out to be ****!<br> <br> Please get this sorted out 3 months and counting !!!