I'm very sorry for your loss, and understand how frustrating it is to have to go through this on top of it. One thing I'm wondering is why United didn't receive your fax when you sent it in twice? Can you verify the number and get the name of a specific person to whom you should address it? Because it sounds like as long as they get the requested information, you'll get your $150 refund. And I don't think United is out of line requesting it - unfortunately, some people will lie about ANYTHING to get a deal.