Samsung Sucks

I bought a Gear Fit 2 health device on 20 Feb 2018. It packed up last week after giving intermittent trouble from the beginning. I took it and the charger to the Samsung service Centre at the Grove Mall in Pretoria on Fri last week. Before even looking at it I was told that according to the serial number it was out of warranty. When I pointed out that I had had it less than a year I was told it didn’t matter the serial number indicated it was out of warranty. On Mon I received an email quote which included a new battery and a new motherboard for the watch. I queried this on Samsung SA website. The following day I received a phone call explaining that it wasn’t because of the serial number but because there were scratches on the surface of the charger that they were reneging on my warranty. There are a few small scratches on the charger because my puppy got tangled up in the too short cable but please explain how they affect the motherboard in the watch itself? I’m appalled at Samsung ‘s attitude and level of service.