MSI refuses to honour their warranty

I brought a GPU through Amazon, but the GPU is broken and experiencing artifacting and program crashes. I have contact MSI to replace the card, their response is "we do not ship international so they can't help" this means they will not honour their warranty and im now stuck with a broken card. There are distributors in South Africa where I live, why can't they ask them to replace the card, or send the card from there.