My Fenix 5X plus turns off when ever it wants too.

So I have had my watch for just over 2 months now and absolutely love it, it was working perfect up until about a month ago THEN, when ever I try and charge my watch now it just turns off and wont turn back on for ages after, it also does the same when I go and start an activity it will Just turn off and stay on a blank screen, also when connecting to wifi and selecting sync time with gps. I have tried absolutely every troubleshouting there is you can do, I have tried new leads, I've tried new charging ports the lot, just wondering if anybody else has ever had this problem and if you managed to get it sorted at all? thanks.