Bests & Worsts Reviews from Amazon

I am soooo disappointed with my Hero 4 black!! I got it in the beginning of the year and since the first day strange things started happenning. I first noticed it wouldn't always respond when I pressed its buttons. Then it started freezing. The videos started coming up with strange colors like pink and green and would appear shaky. It sometimes freezes when I'm taking a photo - so it turns out completely white. Now it simply doesn't respond. I've tried changing memory cards and the same problems continue to happen. I was using a tablet to control it and I saw that on the preview screen (without recording) the problems of striped, and wierd colors happens all the same. I can't explain how miserable I felt after going on a boat trip (where we went diving and all..) when the camera just refused to take photos, pretended to make movies and destroying the ones that came out. At least some photos worked! yay??? :/ The biggest problem is that I bought it on Amazon.com but I'm not in the US anymore... D: