Samsung 5 Note battery problem

I am currently travelling in the UK and my phone battery is not lasting more than a couple of hours and it is getting very hot.I have been into several stores and just phoned SAMSUNG IN Wembley who all advise that they cannot work on it or even do some sort of diagnostic test as it was bought in South Africa.<br> They say that it has different 'parts' to the UK.What a load of hogwash.This means that whilst traveling abroad and your Samsung product becomes faulty there is NOTHING that can be done about it.<br> I will not be getting a Samsung again when an upgrade comes along.<br> There was not even the slightest offer of assistance or alternative what I can do for the next month whilst here in the UK.<br> I have always been a Samsung fan but this changes everything.