I would have thought that, as you broke the phone when changing a tyre, the repair wouldn't be covered by waarranty, so you'd have to pay full price to get it repaired. In that case, does it really mattter that much where you bought the phone, even if it is considered to be a grey import? Might you have more luck, perhaps, if you didn;t even mention the warranty and simply asked how to get the phone screen replaced by Sony Ericsson and how much it would cost? The alternative, as suggested above, is to try to do it yourself. That would invalidate any warranty claims you might have for any other issues, perhaps, but it might be your only option.
I have always been 'amused' by how poorly large companies in the communication business are at communicating.
