You could try writing a very nice message to them. But unfortunately the rules on no shows, non refundable upgrades, the passenger being responsible for holding correct visas etc are very clear. So by all means write and attempt to appeal to their good nature explaining why you are a special case, but be aware that you would be hoping for a special customer services gesture. I suspect you may need to have a particularly good way with words and to be rather fortunate, but good luck!