Frontier Gear 3 Samsung do not stand by their products

I bought a Samsung Gear frontier 3 watch in June 2017 and it was functioning fine till April 2018 then it would not charge on the charging stand. Since it was still under warranty I took it in to Wefix in canal walk and it was repaired. In November about the 24th I put it ion the charger and it would not charge again. The watch in now out of warranty so I take it to wefix again and this time i get a quote for R4767.00 to fix. They stay it has water damage and due to the fact that I am a avid hiker is sweating suppose to cause water damage as I have never dropped it or went and had a swim with it so how does the beautiful samsung Product just fail after a year and a half. I spent quite a lot of money to own this item and Samsung just says I am sorry. I could have bought a garmin or a Apple watch but I chose Samsung because it had such great reviews on the Frontier watch.