GHD Unit Malfunctioning

I am EXTREMELY disappointed with the GHD Straighteners of recent, I have been an avid GHD supporter for the past 10 Years, a few years ago I purchased the GHD Gold Straightener which started malfunctioning after a year, I claimed from my warranty and was provided with a replacement unit, after a year the unit started malfunctioning just as my initial Straightener but I was told that it is out of warranty and therefore could not be replaced. Being a devoted GHD customer, I purchased a GHD Platinum + expecting to not experience the same issue as I did with the Gold, this Straightener is slightly more expensive so I expected a better experience. After a year, the unit started malfunctioning and I had to log a claim for it to be replaced. The replacement unit that I received felt like a refurbished Straightener but I was grateful to have a replacement and therefore did not complain. It's been 10 months and my replacement straightener is now malfunctioning again. My plates are not heating up fully, it is taking much longer to style my hair as a result of this. If I pass the straightener through a section of my hair, I can feel that the hair is barely warm and it requires a few passes to straighten which never used to happen in the past. How many times do I have to claim from the warranty before I receive a straightener that's going to last the full 3 years of warranty? I am unwilling to spend 4800 Rand to see if I'll have any luck with the new Chronos straightener. As a devoted GHD supporter, I'm questioning my loyalty.